Sera Gravel Cleaner Round

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.

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.

Banana leaves – natural care and decoration for aquariumsBanana leaves are a natural and decorative addition to freshwater aquariums. They are particularly suitable for shrimp aquariums, blackwater setups and naturally themed tanks. Once in the water, the dried leaves slowly release tannins, helping to create a natural aquarium environment. The leaves provide small fish, shrimp, snails and crabs with sheltered areas to hide in. As they gradually decompose, they create valuable grazing areas and a natural food source for shrimp and snails. Banana leaves are also popular in shrimp breeding, as they provide the animals with places to retreat to and additional surfaces for grazing.Banana leaves are an interesting alternative or addition to sea almond leaves and can be combined very well with other natural materials such as catappa bark, coconut shells, lotus pods or cholla wood.Advantages at a glanceNatural leaves for aquariums and shrimp tanksRelease tannins into the waterCan help to support a natural blackwater environmentProvide hiding places for small fish, shrimp, snails and crayfishUsed as grazing and feeding areas whilst decomposingNaturally dried and untreatedSafe for fish, shrimp, crayfish and snailsContents: 20 piecesUsageUse approximately 1 leaf per 5 litres of aquarium water. The leaves can be placed directly into the aquarium. They usually sink after 48–72 hours and remain effective for around 2–3 weeks. Afterwards, the remains can be removed or left in the aquarium as a natural food source for shrimp and snails. Zoo Roco Tip: Combine banana leaves with catappa leaves, coconut shells or moss-covered stones. This will create a natural arrangement with plenty of hiding places, foraging areas and a particularly harmonious look.

Catappa Leaves XL – natural sea almond tree leaves for aquariums and terrariumsCatappa Leaves XL are large, dried leaves of the sea almond tree and are particularly popular in aquariums with tropical fish, shrimp and blackwater species. In water, the leaves release natural tannins and humic substances slowly, which may cause the aquarium water to take on a slightly yellowish to brownish tint.This natural colouring diffuses the light and mimics the habitat of many tropical fish species. As the leaves slowly decompose, they create valuable grazing areas for shrimp, catfish and other aquarium inhabitants. At the same time, the large leaves provide natural cover and places of refuge. Catappa leaves can also be used decoratively in terrariums and serve as hiding places for small animals or as ground decoration. Catappa leaves are a popular natural product for natural-looking aquariums, blackwater setups and biotope tanks. When stored dry, they have a very long shelf life and are easy to use.Advantages at a glanceLarge Catappa leaves with a length of 21–40 cmRelease natural tannins and humic substancesSupport a natural blackwater appearanceCan promote the well-being of fishProvide grazing areas for shrimp and catfishAlso suitable as decoration and hiding place in the terrarium100 % natural product UsageThe leaves can be placed directly into the aquarium. They soak up water and sink to the bottom after some time. There they release their natural substances over several weeks. After about two to three weeks, a new leaf can be added if needed. The old leaves can remain in the aquarium, as they are readily grazed on by shrimp and other animals.Product detailsSize: approx. 21–40 cmContents: 10 piecesMaterial: dried leaves of the sea almond tree, Terminalia catappaSuitable for: freshwater aquariums, blackwater tanks, shrimp aquariums and terrariumsZoo Roco Tip: Catappa Leaves XL can be ideally combined with alder cones, lotus pods, cholla wood or coconut shells. This creates a particularly natural-looking aquarium with many hiding places and valuable surfaces for grazing.

Aqua Rebell Makro Spezial NPK Soil Aqua Rebell Makro Spezial NPK Soil is a liquid macronutrient fertiliser for planted aquariums, particularly for aquascapes with active soil substrate. The fertiliser specifically supplies aquatic plants with the essential macronutrients nitrogen, phosphate and potassium. The special formulation is nitrogen-rich, phosphate-limited and potassium-enriched. This makes the fertiliser particularly well-suited to aquariums with soil, as it supports nutrient supply without unnecessarily affecting the natural nutrient dynamics of the substrate. The result is vigorous, robust and relatively compact plant growth.The ready-to-use liquid fertiliser is easy to dose and can be individually adjusted depending on plant density, lighting, CO₂ supply and nutrient consumption. NPK Soil can also be used in aquariums without soil if a controlled supply of macronutrients with reduced phosphate input is desired. For optimum results, we recommend combining it with a suitable micronutrient fertiliser to supply iron and trace elements, for example Aqua Rebell Mikro Spezial Flowgrow.Advantages at a glanceMacronutrient fertiliser containing nitrogen, phosphate and potassiumSpecially developed for planted aquariums with soil substrateNitrogen-rich and phosphate-limited formulationEnriched with potassium for a balanced supplyPromotes vigorous, healthy and compact plant growthAlso suitable for aquariums without soil, if controlled fertilisation is desiredLiquid and ready to useContents: 500 ml or 1000mlUsage and instructionsWeekly water changes of 25 to 50 % are recommended. The dosage can be increased or reduced depending on the aquarium. If nitrate or phosphate levels are already high, the fertiliser should be used with great caution or not at all. If nitrate or phosphate levels rise too sharply as a result of fertilisation, the dosage should be reduced accordingly. A CO₂ concentration of around 20 mg/l can help to promote vigorous plant growth.Zoo Roco Tip: At the start, check nitrate, phosphate and potassium levels regularly to find the right dosage for your aquarium. When used in combination with an iron and trace element fertiliser, this provides a complete nutrient supply for healthy aquarium plants.

Foldable bucket – compact, versatile and always ready for useThe foldable bucket is a practical and space-saving solution for aquariums. Whether changing the water, cleaning the aquarium or transporting water – this versatile bucket is always to hand and can be stowed away particularly compactly in your aquarium cabinet after use. This bucket was originally designed as a drinking bucket for horses, which makes it particularly sturdy.Thanks to its clever design, the bucket can be folded flat. This means it takes up hardly any space and is ideal for aquarium accessory cabinets, small rooms or portable use. The combination of flexible TPR material and robust PP material ensures a durable, lightweight and easy-to-clean design.The sturdy handle enables comfortable carrying, while the additional bottom handle supports controlled pouring. Thanks to its foldable design, the bucket can also be used in a low form when needed, for example for temporarily storing aquarium plants, decorations or accessories during cleaning.Benefits at a glance:Space-saving, foldable designIdeal for water changes and cleaning tasksLightweight and easy to transportMade from flexible TPR and robust PPWith a sturdy handleAdditional bottom handle for controlled pouringBPA-freeEasy to cleanCompact and can be stored flatSpecifications:Capacity: 10 litresWeight: 0.5 kgHeight: 4.8 cm - foldedLength: 31.1 cmWidth: 32.7 cmZoo Roco Tip:  The foldable bucket helps to save space and carry out aquarium maintenance more efficiently. It is lightweight, robust, versatile and can be quickly stowed away after use. A practical solution for anyone who wants to keep their aquarium clean and well-maintained.

Hobby Planaria X Special Bait – Special bait for the planarian trapWith Planaria X Special Bait tablets, you can load your planarian trap quickly and cleanly. The special bait is designed to specifically attract planarians and make more efficient use of the trap.Product benefits:Helps to specifically attract planarians into the trapLess “trial and error” with home remedies – practical for everyday aquarium useIdeal as a refill bait when the original amount of bait has been used upSpecial bait for use in planarian trapsTablet form for easy, clean dosingPackage contents: 5 tabletsZoo-Roco Tip It is best to place the planarian trap in the evening when the aquarium has settled down – many planarians are then more active. Check the trap the next morning and remove it in good time so that no unnecessary food residues remain in the tank.

Me Syphon-Vac Gravel Cleaner – Substrate Cleaner & Water Vacuum for AquariumsThe Me Syphon-Vac Gravel Cleaner is a practical substrate cleaner for thorough and hassle-free aquarium maintenance. It removes reliably silt, dirt and deposits from the gravel whilst at the same time supporting a clean and controlled water change.Thanks to its simple and quick handling, the mulm vacuum is ideal for regular aquarium cleaning. The integrated suction aid allows a comfortable start of the water flow, while the shut-off valve offers better control when cleaning and emptying. This allows dirt to be vacuumed up in a targeted manner without unnecessarily increasing the maintenance effortThe Me Syphon-Vac Gravel Cleaner is the ideal choice for aquarists who value a clean substrate, clear water and efficient care of their aquarium.Product benefits at a glance:Reliably removes silt and dirt from the substrate Ideal for regular water changesSimple and quick to useWith practical suction aidIncludes shut-off valve to control the water flowPerfectly suited for regular aquarium maintenanceTechnical details:Dimensions: 4300 mm x 2400 mm x 700 mm

Plant tweezers - CombiFixPrecise work in the aquarium – without getting your hands wet.The 46 cm long plant tweezers allow for comfortable and hygienic work in freshwater and saltwater aquariums as well as in terrariums. Ideal for precisely grasping dead plant leaves, sunken objects or for removing dead fish – without having to reach into the water with your hands.The slightly widened, ribbed gripping end ensures a secure grip and allows even delicate work on aquatic plants to be carried out with high precision. Thanks to the robust plastic material, the tweezers can be easily cleaned under running water after use.Particularly practical: the tweezers sink in water, ensuring they remain easily accessible at all times.Product benefits at a glance:Suitable for freshwater and saltwater aquariums as well as terrariums46 cm long for comfortable working with dry hands and armsIdeal for removing plant debris, sunken materials and dead fishRibbed gripping end for a secure grip and precise plant careMade from low-maintenance plastic, easy to cleanSinks in water for easy handlingContents: 1 x aquarium plant tweezers

COLOMBO Bio Bacto live bacteria - 330mlFor stable water values & a healthy aquariumWith Bio Bacto live bacteria from Colombo you create the optimum basis for a stable, biologically healthy aquarium. The highly concentrated, live bacteria activate and accelerate the natural biological processes in the water and thus ensure clear water conditions, stable water values and vital fish. Bio Bacto supports the decomposition of organic pollution and helps to establish a functioning biological balance - the most important prerequisite for a permanently healthy aquarium ecosystem.Why Bio Bacto is the right choiceBio Bacto is ideal both for setting up an aquarium for the first time and for ongoing, sustainable aquarium maintenance. The living bacteria ensure that beneficial microorganisms colonize quickly and the aquarium remains biologically stable - without any chemicals.Your benefits at a glance:Starts and stabilizes the aquarium biologyImproves water quality & clarityPromotes healthy, vital fishIdeal for restarting & regular maintenanceApplication & dosageNew start / new set-up: 10 ml Bio Bacto (1 capful) per 10 liters of aquarium water to quickly start the biological cycle.Regular maintenance: 10 ml Bio Bacto per 50 liters of water, 1× weekly to stabilize the water values.Shake well before use as it contains living bacteria.Sustainability & responsibilityBio Bacto stands for modern aquaristics with environmental awareness: 100 % nature-friendly Contains only natural ingredients - free from aggressive preservatives or colorants. Safe for fish, plants and invertebrates. 100 % recyclable packaging Lightweight PET bottle with uniform material for cap and wash-off label - resource-saving and recycling-friendly. Production with Dutch wind energy Produced exclusively with renewable energy to significantly reduce CO₂ emissions. 100% CO₂ compensation Residual emissions are offset by certified reforestation projects according to the Plan Vivo standardZoo Roco tip: COLOMBO Bio Bacto live bacteria are the key to a stable, clear and healthy aquarium - ideal for beginners and experienced aquarists who rely on natural biology and sustainable care.

Bio Start water conditioner - 330mlFor natural & fish-friendly aquarium waterWith Bio Start water conditioner you create the perfect basis for a healthy, stable aquarium. The high-quality care product immediately transforms ordinary tap water into natural, fish-friendly aquarium water and reliably protects your aquarium inhabitants from harmful substances.Bio Start effectively neutralizes chlorine, heavy metals and other water-polluting substances that can be contained in tap water and are dangerous for fish, invertebrates and plants. The environmentally friendly formula optimally treats the water - for a safe start and permanently good water quality.Why Bio Start is the ideal water conditionerBio Start is an indispensable basic product for every freshwater aquarium. Whether during initial set-up, after a water change or when fish are under stress during transportation - the water conditioner quickly and reliably ensures a stable, natural aquarium environment.Your benefits at a glance:Makes tap water immediately suitable for aquariumsProtects fish from toxic substancesSupports a natural balance in the aquariumIdeal for beginners & experienced aquaristsApplication & dosageWhen setting up a new aquarium: Dose 10 ml Bio Start (1 capful) to 25 liters of tap water. With every water change: Also 10 ml per 25 liters of fresh water to ensure consistently high water quality.Sustainable & environmentally conscious - responsibility for animals and natureBio Start not only stands for aquarium care, but also for sustainability:100% nature-friendly ingredientsFree from aggressive chemicals - with natural fibers and clays for safe water treatment.100% recyclable PET bottleLightweight, fully recyclable and resource-saving - including environmentally friendly label and cap.Production with wind energyProduced exclusively with renewable wind power from the Netherlands - for significantly reduced CO₂ emissions.Complete CO₂ compensationResidual emissions are offset by certified reforestation projects in accordance with the Plan Vivo standard. Zoo Roco tip: With Bio Start water conditioner, you can ensure healthy fish, stable water values and a clear conscience towards the environment - the perfect basis for every aquarium.

Bio Start water conditioner - 330mlFor natural & fish-friendly aquarium waterWith Bio Start water conditioner you create the perfect basis for a healthy, stable aquarium. The high-quality care product immediately transforms ordinary tap water into natural, fish-friendly aquarium water and reliably protects your aquarium inhabitants from harmful substances.Bio Start effectively neutralizes chlorine, heavy metals and other water-polluting substances that can be contained in tap water and are dangerous for fish, invertebrates and plants. The environmentally friendly formula optimally treats the water - for a safe start and permanently good water quality.Why Bio Start is the ideal water conditionerBio Start is an indispensable basic product for every freshwater aquarium. Whether during initial set-up, after a water change or when fish are under stress during transportation - the water conditioner quickly and reliably ensures a stable, natural aquarium environment.Your benefits at a glance:Makes tap water immediately suitable for aquariumsProtects fish from toxic substancesSupports a natural balance in the aquariumIdeal for beginners & experienced aquaristsApplication & dosageWhen setting up a new aquarium: Dose 10 ml Bio Start (1 capful) to 25 liters of tap water. With every water change: Also 10 ml per 25 liters of fresh water to ensure consistently high water quality.Sustainable & environmentally conscious - responsibility for animals and natureBio Start not only stands for aquarium care, but also for sustainability:100% nature-friendly ingredientsFree from aggressive chemicals - with natural fibers and clays for safe water treatment.100% recyclable PET bottleLightweight, fully recyclable and resource-saving - including environmentally friendly label and cap.Production with wind energyProduced exclusively with renewable wind power from the Netherlands - for significantly reduced CO₂ emissions.Complete CO₂ compensationResidual emissions are offset by certified reforestation projects in accordance with the Plan Vivo standard. Zoo Roco tip: With Bio Start water conditioner, you can ensure healthy fish, stable water values and a clear conscience towards the environment - the perfect basis for every aquarium.