OXIDIZER 4.9% mini solution 82.5ml

Medaka Bio Filter Block – biological filter block for medakaMedaka Bio Filter Block – biological ceramic filter for Medaka bowls, mini-ponds and aquariums up to 50 litres. Promotes beneficial filter bacteria and clear water.The Medaka Bio Filter Block is a practical ceramic filter block specially developed for medaka bowls, small ponds and aquariums. It supports natural biological water purification and helps to create a stable and healthy living environment for Japanese rice fish (Oryzias latipes) and other small aquarium inhabitants.The highly porous ceramic structure provides a large surface area on which beneficial filter bacteria can colonise. These microorganisms play an important role in the biological breakdown of pollutants in the water. They help to break down ammonium, or ammonia, and nitrite as part of the natural nitrogen cycle.Unlike conventional motorised filters, the Medaka Bio Filter Block requires no mains power supply and no additional pump. It is simply placed directly into the water, where it provides a surface for beneficial bacteria to colonise. This is a straightforward way to support biological filtration, particularly in small medaka bowls and natural-looking mini-ponds.The filter block is suitable for water volumes of up to 50 litres and can be used in both medaka bowls and small freshwater aquariums. It is also suitable for tanks containing shrimp and other small fish.With the Medaka Bio Filter Block, you can easily support the biological balance of your aquarium or mini-pond. The durable ceramic block can be gently cleaned as required and can remain in the water permanently.Your benefits at a glance1 biological ceramic filter block includedFor medaka bowls, mini-ponds and aquariums up to 50 litresPorous ceramic structure with a large surface area for bacterial colonisationPromotes the colonisation of beneficial filter bacteriaSupports the biological breakdown of ammonia and nitriteWorks without electricity or an additional pumpSuitable for medaka, small aquarium fish and shrimpsEasy to use and gentle cleaningTechnical dataMaterial – porous ceramicDimensions – 15 × 10 × 2.5 cmWeight – approx. 210 gInstructions for useBefore using the Medaka Bio Filter Block for the first time, rinse it carefully with clear, preferably chlorine-free water and then place it directly into your Medaka bowl, mini pond or aquarium.Over time, the porous ceramic surface becomes colonised by beneficial filter bacteria. These support the natural breakdown of pollutants and help to stabilise the biological balance.Important information on usePlace the filter block completely underwaterPosition it, if possible, in a spot with gentle water movementIf necessary, clean carefully using water taken from the aquariumDo not use soap or chemical cleaning agentsThe bacterial cultures need time to develop sufficientlyThe Bio Filter Block supports biological water purification; however, with an appropriate fish stock, it does not generally replace a high-performance filter or regular water changes.Zoo Roco TipMedaka are often kept in decorative bowls or small mini-ponds, where strong water currents are deliberately avoided. It is precisely in such tanks that the Medaka Bio Filter Block can be a useful addition to natural water maintenance.We recommend using the filter block as early as possible when setting up the tank so that beneficial bacteria can develop.In combination with live aquatic plants, a suitable fish stock and regular partial water changes, a stable biological balance can be maintained.Check nitrite levels regularly, particularly in newly set-up tanks, as the biological filtration process only develops over time.

JBL ProCristal Compact plus UV-C – water clarifier for aquariumsJBL ProCristal Compact plus UV-C 5 W and 11 W – compact UV-C water clarifier for freshwater and marine aquariums. Reduces floating algae, greenish and whitish cloudiness.The JBL ProCristal Compact plus UV-C is a compact UV-C water clarifier for freshwater and marine aquariums. It helps maintain clear and healthy aquarium water by quickly and efficiently reducing greenish and whitish cloudiness. A UV-C clarifier can be a useful addition to your filter system, particularly in cases of floating algae, bacterial cloudiness or increased bacterial load.The unit is connected to an external filter or a suitable pump in a space-saving manner. Thanks to the practically arranged inlet and outlet ports, the UV-C clarifier can be easily integrated into existing aquarium set-ups. The 5 W version has a minimum installation length of 32 cm, whilst the 11 W version has a minimum installation length of 42 cm.The JBL ProCristal Compact plus UV-C is available in two power ratings: the 5 W version is suitable for partial disinfection of aquariums up to 300 litres and for combating floating algae in tanks up to 100 litres, in each case with a pump delivering a maximum of 300 l/h. The 11 W version is suitable for partial disinfection in aquariums up to 800 litres and for combating floating algae in aquariums up to 200 litres, in each case with a pump with a maximum flow rate of 500 l/h. An integrated safety switch automatically switches off the UV-C lamp when the unit is opened.Your benefits at a glanceAvailable in 5-watt and 11-watt versionsSuitable for freshwater and saltwater aquariumsReduces greenish and whitish cloudiness in the waterHelps combat floating algae and bacterial cloudinessSupports partial disinfection and can reduce the risk of diseaseSpace-saving installation on an external filter or pumpWith a safety switch for automatic shut-off when openedTechnical specifications 5 wattsMinimum installation length: 32 cmPartial disinfection: for aquariums up to 300 litresFor combating floating algae: aquariums up to 100 litresRecommended pump capacity: max. 300 l/hTechnical specifications 11 wattsMinimum installation length: 42 cmPartial disinfection: for aquariums up to 800 litresFor combating floating algae: aquariums up to 200 litresRecommended pump capacity: max. 500 l/hDirections for useConnect the JBL ProCristal Compact plus UV-C to a suitable external filter or pump in accordance with the operating instructions. In aquariums, the UV-C unit is usually connected after the filter so that water that is as clear as possible and has been mechanically pre-cleaned flows through the UV-C clarifier.Ensure the flow rate is correct, as excessive pump output can reduce the contact time between the water and the UV-C light. The unit must only be operated when fully assembled and in accordance with the manufacturer’s instructions. Never look directly at UV-C light. Always disconnect from the mains before carrying out any maintenance work.Zoo Roco TipA UV-C clarifier is particularly helpful for green water caused by floating algae or milky-whitish cloudiness. However, it is no substitute for regular aquarium maintenance, water changes or identifying the root cause. You should also check the lighting duration, nutrient levels, stocking density and filter performance. For smaller aquariums, the 5 W version is usually sufficient; for larger tanks or where water quality is more heavily compromised, the 11 W version may be more appropriate.

JBL NanoBiotopol Betta 15 ml – Water conditioner for betta fishJBL NanoBiotopol Betta 15 ml – water conditioner for betta fish and nano-aquariums. Neutralises chlorine and heavy metals and protects gills, skin and fins.JBL NanoBiotopol Betta 15 ml is a water conditioner specially developed for small aquariums with fighting fish. It quickly treats tap water to make it suitable for fish and is ideal for setting up new aquariums, carrying out partial water changes or topping up water lost through evaporation.Tap water may contain substances that can be harmful to aquarium fish – for example, chlorine or heavy metals such as copper, zinc and lead. JBL NanoBiotopol Betta neutralises these substances, thereby making the water more suitable for betta species. According to the manufacturer, the product also helps to protect mucous membranes, gills, skin and fins.The handy 15 ml bottle is particularly suitable for nano-aquariums and small betta tanks. The drop-by-drop dosing system makes the water conditioner easy and economical to use. When setting up a new tank or carrying out a partial water change, add 2 drops per 1 litre of water.Directions for useAdd JBL NanoBiotopol Betta directly to the aquarium or to the prepared fresh water when setting up a new tank, carrying out a partial water change or topping up the water. Use 2 drops per 1 litre of water. For a partial water change, the dosage is calculated based on the volume of water being replaced.Always use the water conditioner whenever fresh tap water comes into contact with the aquarium. To maintain stable water parameters, the temperature, pH, hardness and nitrite levels should be checked regularly.Zoo Roco TipBetta fish are sensitive to poor water quality and significant fluctuations. Prepare fresh water with JBL NanoBiotopol Betta before every water change and ensure that the temperature matches that of the aquarium water as closely as possible. Regular but gentle water maintenance is particularly worthwhile in small aquariums.

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.

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.

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.

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.

JBL Biotopol R - Water conditioner for goldfish For aquarium water suitable for fish and plants: When setting up a new aquarium, changing the water and for strengthening after fish diseases, especially for goldfish aquariums Binds problematic substances from tap water: neutralizes copper, lead and zinc as well as chlorine and chloramine Healthy water, healthy fish: aloe vera protects mucous membranes, gills, skin and fins Important vitamins of the B group support the normal function of the immune system. With eyebright Euphrasia for special protection of sensitive eyes Scope of delivery: 1 bottle of Biotopol R for aquariums 100 ml. Application: 10 ml/20 l water. Example 60 l aquarium: 30 ml when setting up a new aquarium, 10 ml with 1/3 water change every 2-3 weeks Nature at home - a home for fish and plantsFish and invertebrates should feel as comfortable in the aquarium as they do in nature. Prepare the aquarium water to suit the biotope and protect the aquarium inhabitants. Clean aquarium water - optimum water quality. For new set-ups, partial water changes and after using remedies. Tap water contains heavy metals such as copper, zinc and lead. To make tap water suitable for fish, it must be free of heavy metals, chlorine and chloramine. These are neutralized with special water conditioners and the aquarium water becomes fish-friendly. Biotopol also protects the mucous membranes, gills, skin and fins with aloe vera. Aloe vera protects against stress, noticeably protects the mucous membranes of the fish and reduces the risk of disease thanks to the vitamin B complex, chelators enclose heavy metals, aggressive substances are removed during the next partial water change. Conversion of chlorine into harmless chloride, dangerous chlorine and chloramine are neutralized.Use when: Water change and new set-up; to strengthen the fish after treatment for disease. Always use one hour before using bacterial starters such as JBL Denitrol.Advantages of JBL water conditioners: Pollutants in tap water are neutralized, Natural substances are added, Aloe vera protects the mucous membranes, gills, skin and fins, Aloe vera is resistant to heavy metals, Protection against stress and reduces the risk of disease thanks to vitamin B complex, Chelators enclose heavy metals, aggressive substances are removed during the next partial water change. Conversion of chlorine into harmless chloride, Dangerous chlorine and chloramine are neutralized.