ARKA pH/TDS/EC meter

Arka myAqua 3800 Reverse Osmosis System – high-performance water treatmentArka myAqua 3800 Reverse Osmosis System – a high-performance reverse osmosis system for freshwater and saltwater aquariums. Up to 3,800 litres per day, approx. 1:1 water ratio and up to 99% salt retention.The ARKA myAqua 3800 osmosis system is a high-performance reverse osmosis system for producing high-quality osmosis water for aquariums. It is suitable for both freshwater and saltwater aquariums and is ideal when large quantities of pure source water are required.With a daily output of up to 3,800 litres of reverse osmosis water, or approximately 2.6 litres per minute, the system is particularly efficient. The Arka myAqua 3800 removes up to 99% of salts as well as many undesirable substances such as pollutants, bacteria, pesticides and heavy metals from tap water. This provides you with a controllable basis for stable water parameters in the aquarium.Thanks to a water yield ratio of approximately 1:1 (osmosis water to waste water), the system operates much more economically than many conventional osmosis systems. The integrated, long-lasting pressure booster pump supports high output and ensures reliable operation. The Arka myAqua 3800 is supplied with a wall bracket and suitable accessories and can be connected to standard domestic water mains.The reverse osmosis system is particularly recommended for aquarists who regularly carry out large water changes, set up saltwater tanks or wish to care for sensitive animals and plants with water parameters that are as constant as possible.Your benefits at a glanceContents: 1 Arka myAqua 3800 reverse osmosis system including accessoriesUp to 3,800 litres of reverse osmosis water per dayApprox. 2.6 litres of reverse osmosis water per minuteUp to 99% salt retention capacityFilters out pollutants, bacteria, pesticides and heavy metalsAn efficient ratio of approximately 1:1 between reverse osmosis water and waste waterWith a durable pressure booster pumpSuitable for freshwater and saltwater aquariumsTechnical specificationsOperating pressure: 1–4.5 barSuitable water temperature: 5–45 °CPower consumption: 120 W, standby 1–2 WVoltage: 24 VDimensions: approx. 432 × 163 × 486 mmInstructions for useConnect the Arka myAqua 3800 to a suitable domestic water supply in accordance with the operating instructions. Ensure that the operating pressure and water temperature remain within the specified ranges. The osmosis water produced can then be used for water changes, for preparing seawater or for precisely adjusting water parameters.Before first use and after changing filters or membranes, the system should be flushed in accordance with the manufacturer’s instructions. Filter performance should be checked regularly based on the osmosis water parameters and the production rate. The quality, temperature and pressure of the tap water can affect the actual water yield and the quality of the osmosis water.Zoo Roco TipFor sensitive aquarium inhabitants, shrimps, planted tanks and marine aquariums, reverse osmosis water provides an excellent basis for precisely and consistently maintaining water parameters. If necessary, use suitable hardness-increasing salts or seawater salt to ensure the water is optimally adapted to the specific animals and plants in the tank. Check the water parameters regularly using suitable test kits or a conductivity meter.

Ammania gracilis – red stem plant for aquascapingAmmania gracilis – a decorative red stem plant for the midground and background. Ideal for aquascaping, with beautiful colouration when provided with light, CO₂ and a good supply of nutrients.Ammania gracilis is an attractive stem plant for freshwater aquariums and is particularly popular in aquascaping. The plant produces elongated, slightly wavy leaves which, depending on light and nutrient levels, can range in colour from greenish to coppery to a rich reddish hue. This allows it to add beautiful splashes of colour to the aquarium and makes it ideal as an eye-catching feature in the midground or background.Under good conditions, Ammania gracilis grows upright and can reach a height of around 20 to 50 cm. To develop an intense red colour, the plant requires medium to strong lighting, a good supply of nutrients and, ideally, CO₂ supplementation. It develops its full colour particularly well under strong light and with sufficient micronutrients.Ammania gracilis is suitable for planted aquariums, aquascapes and ‘ Holland ’ aquariums. Regular trimming keeps the plant compact and encourages bushier branching. The cut shoot tips can be replanted directly into the substrate.Your benefits at a glanceAttractive red stem plant for aquariumsIdeal for the midground and backgroundAdds lovely splashes of colour to the aquascapeGrowth height approx. 20–50 cmParticularly beautiful colouration under good lightingBenefits from CO₂ injection and nutrient fertilisationEasy to propagate by pruningHeight: approx. 20–50 cmInstructions for useBefore planting, carefully remove the pot, rockwool or transport material from the roots. If necessary, divide the plant into smaller sections and plant the individual stems in the substrate, leaving a little space between them. This ensures the shoots receive enough light and can develop well.Ammania gracilis prefers a bright spot in the aquarium. Moderate to strong lighting, as well as a regular supply of macro- and micronutrients, promote healthy growth and vibrant colouration. Adding CO₂ is recommended, as the plant grows significantly more vigorously and with more intense colour when supplied with sufficient CO₂.Regular pruning encourages bushier growth. The cut shoot tips can be replanted as cuttings.Zoo Roco TipTo develop a beautiful red to copper-coloured hue, Ammania gracilis requires plenty of light and a steady supply of nutrients. Do not plant the stems too densely, so that the lower leaves also receive sufficient light. When combined with light-green plants, this creates a particularly beautiful colour contrast in the aquarium.

TetraMin Large Flakes 1L – XL flake food for larger ornamental fishTetraMin Large Flakes 1L – a complete XL flake food for larger freshwater ornamental fish. Easily digestible, stays afloat for a long time and is ideal for community aquariums. Tetra TetraMin Large Flakes 1L, also known as TetraMin XL Flakes, are a balanced staple food for larger freshwater ornamental fish. The extra-large flakes are tailored to the feeding habits of larger aquarium fish and are ideal for a complete daily diet. The flakes initially float at the water’s surface for a long time before sinking slowly. This allows both surface-feeding fish and those in the middle water zone to readily consume the food. This makes TetraMin Large Flakes particularly suitable for community aquariums with a mixed fish population. The carefully balanced formula contains high-quality nutrients, vitamins, minerals and trace elements. Naturally occurring prebiotics support the fish’s digestion and bodily functions. The food promotes vitality, growth and vibrant colours, and can help improve water quality thanks to its high digestibility. TetraMin’s BioActive Formula also helps to boost the fish’s resistance.Your benefits at a glanceExtra-large flakes for larger freshwater ornamental fishComplete staple food for daily feedingStays afloat for a long time and sinks slowlyIdeal for mixed fish populations in community aquariumsSupports vitality, growth and vibrant coloursWith prebiotics to support feed utilisationEasily digestible and water-friendlyFree from colourings and added preservativesContains 1 litre of flake foodInstructions for useFeed TetraMin Large Flakes several times a day in small portions. Only add as much food to the aquarium as your fish can consume completely within a few minutes. Any uneaten food should be removed to maintain water quality.Zoo Roco TipTetraMin Large Flakes are ideal if standard flakes are too small for your fish or are eaten too quickly by smaller aquarium inhabitants. As they sink slowly, fish in the middle water zone can also reach their food easily.

JBL ProAquaTest pH 6.0–7.6 – pH water testJBL ProAquaTest pH 6.0–7.6 is a precise drop test for freshwater aquariums. It comes with a laboratory comparator system, colour scale, 2 glass cuvettes and reagent – sufficient for approx. 80 measurements.The JBL ProAquaTest pH 6.0–7.6 is an easy-to-use drop test for accurately determining the pH value in freshwater aquariums. The measuring range from pH 6.0 to 7.6 is particularly suitable for community aquariums, planted aquariums and aquascapes where a slightly acidic to neutral pH value needs to be maintained. A stable pH value is important for the well-being of fish, shrimps and plants. As many dissolved substances in the water are affected by the pH value, significant fluctuations should be avoided. The JBL test helps to detect changes at an early stage and to check water parameters regularly. Thanks to the laboratory comparator system, any natural colouration of the aquarium water is compensated for. To do this, one cuvette is filled with aquarium water and reagent, whilst a second cuvette serves as a control sample. The value is then read off the colour scale. The test kit is sufficient for approx. 80 measurements and contains reagent, 2 glass cuvettes with screw caps, a pipette, a comparator block and a colour scale.Your benefits at a glanceDrop test for determining the pH valueMeasuring range: pH 6.0–7.6Suitable for freshwater aquariumsIdeal for community aquariums, planted aquariums and aquascapingPrecise monitoring in the slightly acidic to neutral rangeLaboratory comparator system compensates for the water’s natural colourEasy to use with colour changeFor approx. 80 measurementsHelps to detect pH fluctuations at an early stageInstructions for useFill the cuvettes with aquarium water in accordance with the instructions. Add the reagent to one cuvette, place both cuvettes in the comparator block and compare the colour with the colour chart provided. After the measurement, the cuvettes and syringe should be rinsed thoroughly with clean water.When setting up a new aquarium, JBL recommends measuring the pH value daily during the first week. After that, a check once a week is usually sufficient, provided no particular problems or significant changes occur in the aquarium.Zoo Roco TipThe pH value should always be considered alongside other water parameters such as KH, GH, nitrite and nitrate. Regular monitoring is particularly advisable when using CO₂ fertilisation, carrying out water changes or keeping sensitive fish and shrimp species.

SF Mangrove Root L – Decoration for aquariums & terrariumsSF Mangrove Root L is a lifelike driftwood replica for aquariums and terrariums. This decoration creates a natural look and offers plenty of hiding places for aquarium and terrarium animals.The SF Mangrove Root L is a lifelike replica of natural driftwood and is suitable for use in aquariums and terrariums. The textured root-like appearance adds a natural touch to the setup and creates a beautiful underwater or terrarium landscape. This decoration provides hiding places for aquarium and terrarium animals. Thanks to its large size, the Mangrove Root is ideal as a central focal point in an aquarium or terrarium. It can be combined with plants, stones, substrate or other decorative elements, helping to make the habitat visually more varied and structured. As this is an artificial decoration, its shape remains permanently stable and, unlike real wood, does not need to be watered. Nevertheless, the root should be rinsed thoroughly with clean water before first use.Your benefits at a glanceLifelike replica of mangrove or driftwoodSuitable for aquariums and terrariumsCreates a natural underwater worldOffers plenty of hiding placesIdeal as an eye-catcher in the tankTextured surface with a natural root-like appearanceCan be combined with plants, stones and substrateRetains its shape and is easy to maintainNo need for lengthy pre-soaking, as with real woodSuitable for freshwater aquariums and terrariumsDimensions249 mm x 310 mm x 370 mmapprox. 1.8 kgInstructions for useRinse the decoration thoroughly with clean water before placing it in the tank. Do not use any cleaning agents. Position the root so that it stands securely and animals cannot become trapped. Ensure there is sufficient swimming space left in the aquarium.Care instructionsIf necessary, the decoration can be removed from the tank and cleaned with lukewarm water and a soft brush. Do not use soap, disinfectants or harsh cleaning agents, as residues can be harmful to animals.Zoo Roco TipThe SF Mangrove Root L looks particularly natural when combined with epiphytes, mosses or small stones. In terrariums, it can also be used as a structural element and hiding place, allowing animals to make use of various retreat areas.

CN Slimline Rock Colorado 60 × 55 cm – Back panelCeramicNature CN Slimline Rock Colorado 60 × 55 cm is an ultra-flat back panel with a natural rock look for aquariums and terrariums. It is only approx. 15 mm thick, can be extended in a modular fashion and cut to size as required.The CN Slimline Rock Colorado 60 × 55 cm from CeramicNature is a decorative background panel for aquariums and terrariums. The natural rock look adds depth and texture to the setup without taking up much space in the tank. With its slim profile of approx. 15 mm, the background panel is also suitable for narrower tanks or terrariums where the internal space needs to be preserved as much as possible. CeramicNature The back panel is handcrafted and finished with a robust mineral coating. This surface is resistant to moisture, wear and tear, and temperature fluctuations. This means the Slimline back panel can be used in both aquariums and terrariums. Thanks to its modular design, several back panels can be joined together seamlessly. If required, the back panel can be cut to size using a metal saw and adapted to the desired dimensions. This makes it ideal for bespoke set-ups, larger tanks or natural-looking back panel designs.Your benefits at a glanceDecorative back panel for aquariums and terrariumsNatural rock lookSlim Slimline profile, approx. 15 mm thickSaves space in the tankHandmadeRobust mineral top layerResistant to moisture and wear and tearSuitable for aquariums and terrariumsNon-toxic and safe for animalsModularly expandableSeveral back panels can be joined seamlesslyCan be cut to size for customisationIdeal for natural-looking set-upsDimensions: 60 × 55 cmAvailable colours: Colorado Brown and Oxford GreyInstructions for useBefore installation, the back panel should be cut to the desired size and rinsed thoroughly. For aquariums, we recommend securing it with suitable aquarium silicone. Ensure that the back panel is securely fitted and that no animals can get behind it. Take care when cutting to size and smooth any cut edges if necessary.Zoo Roco TipThe Slimline back panel is particularly well suited when a natural rock-like appearance is desired, but you want to lose as little swimming or climbing space as possible. Combined with roots, stones, mosses or epiphytes, you can quickly create a harmonious, natural-looking design.

DuplaRin Color 500 g – colour-enhancing fish foodDuplaRin Color 500 g is a colour-enhancing granulated feed for small freshwater and marine fish. Contains spirulina, vitamins, trace elements, stabilised vitamin C and astaxanthin.DuplaRin Color 500 g is a high-quality, colour-enhancing granulated feed for small ornamental fish in freshwater and marine aquariums. The fine granules are particularly suitable for smaller fish species that require a nutrient-rich, easily digestible feed. The formula contains valuable protein sources, vitamins, minerals, trace elements and natural colour-enhancing ingredients. Spirulina algae and selected plant-based ingredients support vitality, growth and the natural colour intensity of aquarium fish. The food is water-stable, easily digestible and enriched with stabilised vitamin C. DuplaRin Color is suitable for the daily feeding of small freshwater and marine fish. Thanks to its fine granules, the food is easily ingested and is ideal for community aquariums housing smaller fish species.Your benefits at a glanceColour-enhancing pellet food for small ornamental fishSuitable for freshwater and marine aquariumsWith spirulina algae and plant-based ingredientsWith high-quality protein sourcesContains vitamins, minerals and trace elementsWith stabilised vitamin CWith astaxanthin to support natural colour intensityNutrient-rich and easily digestibleStable in waterHigh bioavailabilitySuitable for daily feedingContents: 500 gInstructions for usePlace the granules directly on the water’s surface or in a well-circulated area of the aquarium. Observe the fish whilst feeding and adjust the amount according to the number of fish, their size and feeding behaviour.Zoo Roco TipColour-enhancing food should be used regularly but in moderation. DuplaRin Color can effectively enhance the natural splendour of colours, particularly in vibrantly coloured characins, livebearers, small cichlids or marine fish. A varied diet remains important, however.

CeramicNature Green plush pufferfish 33 cmGreen plush pufferfish from CeramicNature, approx. 33 cm tall. Soft, round and with a spiny texture – an original gift idea for children, fish fans and aquarium enthusiasts.The 33 cm green plush pufferfish from CeramicNature is a soft and original soft toy for anyone who loves fish, aquariums and unusual sea creatures. It also features a standard suction cup on the front of its belly. With its round shape, green colouring and textured surface, it resembles a real pufferfish – naturally in a particularly cuddly version. The soft toy is inspired by the appearance of marine pufferfish and combines a realistic, playful design with pleasantly soft plush fabric. The surface features a spiny texture but remains soft and pleasant to the touch. This makes the pufferfish ideal both for cuddling and as a decorative gift for aquarium enthusiasts. Its dimensions are 32 × 20 × 15 cm Whether as a gift, a collector’s item, a decoration for a child’s bedroom or a little treat for fish lovers – this green pufferfish makes a charming eye-catcher in any home.Your benefits at a glanceGreen pufferfish made from soft plushAn original gift for aquarium and fish enthusiastsWith a suction cup on its bellyA design that is both realistic and playfulRound shape with a spiny textureSoft and pleasant to the touchIdeal for cuddling, collecting or decoratingSuitable for children’s bedrooms, aquarium corners or as a gift itemInspired by the appearance of marine pufferfishChild-friendly and cuddlyCare instructionsIf slightly soiled, the pufferfish can be gently cleaned with a damp cloth. Please also refer to the care instructions on the product label.Zoo Roco TipThe green plush pufferfish is a lovely gift idea for children and aquarium enthusiasts. It is particularly suitable as an addition to an aquarium gift, as a decoration in a fish-themed room or as a charming eye-catcher in a shop.

Natural vineyard snails, sold individually – 4–6 cmNatural vineyard snail shells, approx. 4–6 cm, in a pack of 60. Decorative, versatile and ideal as natural hiding places for fish.The vineyard snail shells / natural, approx. 4–6 cm, are natural, empty snail shells for decorating and adding structure to aquariums, terrariums or creative craft projects. Thanks to their natural shape and colouring, they look particularly authentic and can be integrated in a variety of ways into natural-looking designs. In aquariums, the snail shells are particularly well suited as natural hiding places for fish. For certain species of cichlid in particular, empty snail shells can be used as a place of refuge or a breeding site. The vineyard snail shells are decorative, versatile and particularly suitable for cichlid breeding. As this is a natural product, the shape, colour, texture and size may vary slightly. Each snail shell is therefore a unique little piece and adds a natural touch to the aquarium décor.Your benefits at a glanceNatural empty vineyard snail shellsNatural lookSize: approx. 4–6 cmIdeal for aquariums, terrariums and decorationsNatural hiding places for fishParticularly interesting for cichlids that breed in snail shellsVersatile for use in natural-looking aquascapesAlso suitable for craft and decorative purposesEvery snail shell is uniqueNatural material with individual shapes and coloursBoth decorative and functionalInstructions for useBefore placing them in the aquarium, the snail shells should be thoroughly rinsed with clean water. If you have sensitive fish, it is advisable to soak the snail shells in water beforehand and check the water parameters. Position the snail shells so that no fish can become trapped and the openings remain easily accessible.Zoo Roco TipFor snail-shell-breeding cichlids, several snail shells should always be provided per fish. This allows the fish to choose, establish territories and retreat when necessary. When combined with a sandy substrate, the snail shells look particularly natural.

WIO Wood Sinking Chips Accent 150 gWIO Wood Sinking Chips Accent 150 g are natural wooden accents made from bark, roots, twigs and wood chips. Ideal for realistic details in aquascapes, biotope aquariums, paludariums and terrariums.WIO Wood Sinking Chips Accent 150 g are natural wooden accents for creating detailed designs in aquariums, paludariums and terrariums. The mixture mimics accumulations of wood as found in riverbeds, along riverbanks and on jungle floors. This allows hardscape transitions, the bases of stones and natural drift lines to be designed particularly realistically. The mixture consists of selected wooden components such as bark, fine roots, twigs and wood chips. After soaking or preparation, the pieces of wood sink and can be placed precisely between stones, on slopes or in small hollows. It is recommended to boil the material for approximately 20 minutes or soak it for 24–72 hours before use, and then introduce it into the tank gradually. As this is a natural wood-based material, tannins may be released. In weakly buffered water, this can affect the pH value. Gradual addition and monitoring of water parameters are therefore particularly advisable where sensitive aquarium inhabitants are present.Your benefits at a glanceNatural wood accents for aquascaping and biotope designImitates accumulations of wood in riverbeds and jungle floorsA mixture of bark, fine roots, twigs and wood chipsSuitable for aquariums, paludariums and terrariumsIdeal for concealing transitions and the bases of rocksAdds depth, structure and natural detailsCan microfauna provide habitat and a food source?Sinks after preparationSuitable for natural-looking layouts and biotope aquariumsContents: 150 gInstructions for useRinse thoroughly before use. For use in the aquarium, it is recommended to boil the Wood Sinking Chips for approx. 20 minutes or soak them for 24–72 hours so that they sink more effectively and any initial release of substances is reduced. Then add them in small quantities in specific locations, for example behind rocks, at the foot of slopes or along natural drift lines.Zoo Roco TipWood Sinking Chips look particularly natural when they are not spread out over a large area, but placed strategically in small clusters – for example, behind rocks, in crevices or at the junctions between sand, soil and hardscape. This creates a naturally developed layout without the aquarium looking overloaded.

KoiPro Bacteria House 24 pieces – filter mediumKoiPro Bacteria House is a highly porous ceramic filter medium for koi ponds, trickle filters and Bakki Shower. The 24 filter elements provide ample surface area for beneficial filter bacteria to colonise and help maintain stable water quality.KoiPro Bacteria House filter medium is a highly porous, ceramic filter material for koi ponds and garden ponds. The fine pore structure provides a large surface area for beneficial filter bacteria to colonise, which play an important role in breaking down pollutants such as ammonium/ammonia and nitrite. As a result, the filter medium supports stable biological filtration performance in the pond. Bacteria House has a water absorption rate of 80 %. Thanks to the microscopically small pores, bacteria can colonise the material quickly and break down organic pollutants in the pond water. At the same time, the porous structure also acts mechanically, as coarser organic debris is retained and can be further broken down during the filtration process. The filter medium is particularly well suited to Bakki Shower / trickle filters, but can also be used in other pond filters. One pack contains 24 ceramic filter elements, each approximately 38 × 38 mm thick and 160 mm long.Your benefits at a glanceHighly porous ceramic filter mediumSuitable for koi ponds and garden pondsSupports biological filtrationLarge surface area for beneficial filter bacteriaHelps break down ammonium/ammonia and nitriteWater absorption rate of approx. 80 %Can also be used as a mechanical filter mediumSuitable for Bakki Shower and trickle filtersAlso suitable for other pond filtersPromotes stable water qualityDoes not become clogged quickly, unlike conventional mediaContents: 24 piecesDimensions per element: approx. 38 × 38 × 160 mmInstructions for useBefore first use, briefly rinse the filter medium with pond water or clear water to remove any loose debris. Then place the Bacteria House elements in the filter so that they are well flushed or sprayed by the water. They are particularly effective when used in trickle filters or Bakki Shower systems, as there is plenty of oxygen available for the filter bacteria there.Zoo Roco TipBiological filter media work best when they are well supplied with oxygen and the pond filter is running continuously. After initial installation, the medium takes some time for sufficient filter bacteria to colonise it. During this running-in phase, water parameters should be checked regularly.

StreamBiz Medaka Surf Pearls 30 g – floating fish foodStreamBiz Medaka Surf Pearls 30 g are floating 3-mm pellets for medaka, guppies and surface-feeding ornamental fish. With insect protein, krill, spirulina, chlorella and other natural ingredients.StreamBiz Medaka Surf Pearls 30 g are a floating complete feed for ornamental fish and have been specially developed for surface-feeding fish. The pellets, which are approximately 3 mm in size, remain buoyant at the water’s surface for a long time and do not disintegrate immediately. This allows medaka, guppies and many other fish to feed on the pearls at their leisure and to pick up small crumbs time and again. The formula contains a high proportion of insect protein as well as other high-quality natural ingredients such as fish meal, krill, prawn meal, chlorella, spirulina, red mosquito larvae, Artemia, Daphnia, Gammarus, salmon oil, wheat germ, moringa and shiitake. This makes the food ideal for providing a varied and nutrient-rich diet for medaka and other smaller ornamental fish. As the food floats, it is particularly easy to observe. You can see straight away how actively your fish are feeding and can adjust the amount of food accordingly. Your benefits at a glanceFloating complete feed for ornamental fishSpecially developed for surface-feeding fishIdeal for medaka, guppies and many other ornamental fishApprox. 3 mm floating pelletsStays afloat on the water’s surface for a long timeDoes not disintegrate immediately in the waterWith a high proportion of insect proteinWith krill, prawn meal, chlorella and spirulinaWith red mosquito larvae, Artemia, Daphnia and GammarusWith salmon oil, wheat germ, moringa and shiitakeHigh nutrient contentContents: 30 gInstructions for usePlace the Surf Pearls directly onto the water’s surface. As they float, you can easily see whether all the fish are feeding. Any uneaten remains should be removed if necessary.Zoo Roco TipFloating food is particularly practical for medaka in tanks, bowls or mini-ponds. It remains clearly visible, can be dispensed accurately and allows you to monitor the animals’ feeding activity on a daily basis.