Sera Gravel Cleaner Round

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 Clynol - Water conditionerJBL Clynol is a water conditioner for cleaning and clarifying freshwater and saltwater aquariums. Cleans and clarifies in a natural way. Cleans and clarifies aquarium water in a natural way using micro-fine minerals that bind substances through their surface structure. Eliminates natural and chemical discoloration and particle turbidity. Binds heavy metals, ammonium, proteins and odor. Creates crystal clear aquarium water without the use of chemicals! Overdosing is not dangerous! Dosage: Weekly 10 ml / 40 l. For severe problems: 10 ml / 20 l.

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.

JBL Ferropol - Plant fertilizer for freshwater aquariums Basic supply for aquatic plants: Basic fertilizer for freshwater aquariums Vital plant growth, no deficiency symptoms: Important minerals through iron, potassium and other trace elements Intense leaf coloration thanks to optimum iron concentration and composition Optimum promotion of plant growth means fewer algae problems. Without phosphates and nitrates. Harmless to freshwater crayfish and shrimps Application: 10 ml/40 l water. Environmentally friendly refill bag available Food for aquarium plantsHealthy plants prevent algae growth, supply oxygen, remove pollutants, provide hiding places and reduce pathogens. Healthy plants = healthy fishThe following needs should be met for plants to thrive:Light as an energy source for photosynthesisCO2, nutrients and trace elements as growth promoters. JBL plant care products provide the plants with all the main nutrients and essential trace elements. In this way the plants receive all the nutrients they need for absorption via the leaves and roots in order to prevent deficiency symptoms (e.g. iron deficiency).

Easy-Life OsmoVital Salt – Mineralien für stabiles AquariumwasserOsmoVital Salt ist ein hoch lösliches Aufhärte- und Mineralsalz, mit dem Sie Osmosewasser, demineralisiertes Wasser, gefiltertes Regenwasser oder zu weiches Leitungswasser gezielt remineralisieren. Es erhöht GH und KH und ergänzt wichtige Spurenelemente – ohne Nitrat oder Phosphat.Produktmerkmale:Aufhärte- und Mineralsalz für Süsswasseraquarien Geeignet zum Remineralisieren von Osmosewasser und sehr weichem Wasser Erhöht GH (Gesamthärte) und KH (Karbonathärte) Ergänzt essentielle Vitamine/Spurenelemente (u. a. Kalium, Eisen, Mangan, Bor, Iodid, Fluorid) Ohne Nitrat und ohne Phosphat Erhältliche Gebindegrössen: 250 g, 500 g, 1000 gVorteile:Hilft, ein stabileres Wasserumfeld aufzubauen (GH liefert Mineralien, KH unterstützt den pH-Puffer) Ideal, wenn Ihr Ausgangswasser zu weich ist oder Sie konsequent mit Osmosewasser arbeiten Einfache Anwendung beim Erstbefüllen und bei WasserwechselnDosierung:Dosierung (Richtwerte) pro 100 Liter (1 Messlöffel = 5 g): 1 Löffel: GH +2 °d, KH +1.3 °d, +140 µS/cm 2 Löffel: GH +4 °d, KH +2.6 °d, +280 µS/cm 3 Löffel: GH +6 °d, KH +3.9 °d, +420 µS/cm 4 Löffel: GH +8 °d, KH +5.2 °d, +560 µS/cm 5 Löffel: GH +10 °d, KH +6.8 °d, +700 µS/cmWenn Sie mit Osmosewasser arbeiten oder Ihr Leitungswasser sehr weich ist, fehlen im Aquarium oft genau die Mineralien, die Fische, Wirbellose und Pflanzen für stabile Bedingungen benötigen. Easy-Life OsmoVital Salt setzt genau hier an: Als hoch lösliches Aufhärte- und Mineralsalz ermöglicht es Ihnen, weiches Wasser schnell und kontrolliert zu remineralisieren – ideal beim Erstbefüllen und bei jedem Wasserwechsel.Der Nutzen liegt in der gezielten Anpassung von GH und KH. Die Gesamthärte (GH) liefert wichtige Mineralien, während die Karbonathärte (KH) den pH-Wert im Aquarium als Puffer unterstützt. So schaffen Sie ein Wasserprofil, das sich besser an die Bedürfnisse vieler Süsswasserbewohner anpassen lässt – besonders dann, wenn Sie bewusst mit weichem Ausgangswasser starten und Ihre Werte selbst einstellen möchten.Neben der Aufhärtung ergänzt OsmoVital Salt zudem essentielle Spurenelemente und Vitamine. Gleichzeitig ist es frei von Nitrat und Phosphat, was gerade in gepflegten Pflanzenaquarien und bei kontrollierter Nährstoffführung ein Vorteil sein kann. Durch die hohe Löslichkeit lässt sich das Salz unkompliziert dosieren und einmischen.Die Dosiertabelle hilft Ihnen beim Einstellen: Pro 100 Liter und 5 g (1 Messlöffel) steigen GH, KH und die Leitfähigkeit in klar definierten Schritten. Damit können Sie Ihre Zielwerte sauber erreichen, statt „auf gut Glück“ nachzumineralisieren. Für beste Resultate empfiehlt sich, die Werte nach dem Ansetzen des Wechselwassers zu messen und bei Bedarf in kleinen Schritten nachzujustieren.Zoo Roco Tipp:Mischen Sie OsmoVital Salt idealerweise im Wechselwasser an (Eimer/Kanister), rühren Sie gut um und messen Sie GH/KH danach, bevor das Wasser ins Becken kommt. So vermeiden Sie Schwankungen im Aquarium. Wenn Sie Garnelen oder spezielle Biotoparten pflegen, richten Sie die Zielwerte konsequent nach deren Bedürfnissen aus – nicht nach „Standardwerten“.

Bio-CO₂ fertilizer system for freshwater aquariums up to 60/80 liters of water. The Carbo Bio Start 60/80 organic CO₂ fertilizer system reliably supplies freshwater aquariums up to 60/80 liters with essential CO₂. It is ready for use in just a few simple steps and CO₂ production starts after just 24 to 48 hours. A pressure-resistant CO₂ hose and the CO₂ mini topper developed for low operating pressure - or optionally a CO₂ injector for connection to the Dennerle Corner Filter 40 or 60 - ensure fast and efficient dissolution of the CO₂ in the aquarium water.Product features at a glanceComplete set for uniform CO₂ fertilizationWith CO₂ Constant Gel made from 100% renewable raw materialsFor healthy, strong plants and bright colorsFor at least 40 days of consistent CO₂ productionCarbon is the most important nutrient for aquarium plantsWhy Carbo Bio Start 80? Carbo Bio Start 80 offers you an environmentally friendly way of efficiently supplying your aquarium plants with CO₂. The even release promotes stable plant growth, reduces algae formation and supports a healthy ecosystem - without the need for pressurized gas cylinders or complex technology. Ideal for aquarium beginners and anyone who wants uncomplicated, natural CO₂ fertilization.

Dennerle Care & Protect Set For healthy water, strong plants and vital fish With the Dennerle Care & Protect Set you can immediately transform tap water into aquarium water suitable for fish and plants. The set reliably protects against harmful substances and ensures that your aquarium inhabitants thrive in a healthy environment. At the same time, your plants are comprehensively supplied with all the important nutrients to promote healthy growth and intense colors. Product benefits in detail: Water that is immediately suitable for fish and plants: removes pollutants from tap water and creates optimum conditions for fish and plants. Comprehensive nutrient supply: Provides aquarium plants with all essential nutrients for strong growth and vibrant colors. Strengthens the immune system: Supplements missing vitamins and trace elements, supports the stress resistance and health of your fish. Successor to the popular Nano care set: Modernized formulation with improved effectiveness for nano and standard aquariums. Easy to use: Quick and easy to dose, ideal for beginners and experienced aquarists. Zoo Roco tip: For optimum results, add the Care & Protect Set directly to the aquarium when changing the water. Ensure regular dosing according to the aquarium size and plant population. This way, fish and plants will benefit equally from the comprehensive care and your aquarium will remain healthy, vital and visually attractive.

Dennerle Plant System Set Optimal fertilization for large, planted aquariums The Dennerle Plant System Set offers the ideal nutrient supply for large, planted aquariums. With its 3-component fertilizer system, it ensures healthy growth, magnificent plants and intensely bright colors. Benefit from over 50 years of experience in aquaristics and a perfectly balanced nutrient mix for your plants. Product benefits in detail: 3-component fertilizer for large aquariums: Specially developed for larger planted aquariums, the set offers a customized, balanced nutrient supply for all plant species. High coverage thanks to highly concentrated active ingredients: Thanks to the concentrated formulation, a small amount is sufficient to achieve long-lasting results. Your plants are always optimally supplied. Magnificent plants & intensely bright colors: Boost the growth of your plants and let their colors shine in full intensity. The set ensures vibrant green and vivid colors. Complete nutrient supply: The set contains all the necessary nutrients, minerals and trace elements for healthy plants. Your plants get everything they need for optimum growth. 50 years of experience: With over 50 years of research and experience, Dennerle offers a product that is based on the natural needs of your plants. Trust in quality and innovation from the aquarium hobby. Zoo Roco Tip: For best results, we recommend regularly adjusting the dosage of the Dennerle Plant System Set to the growth of your plants and the volume of the aquarium. Make sure to distribute the fertilizer quantities evenly and maintain the aquarium regularly to ensure stable water quality. Regular water changes and the integration of CO2 can also support plant growth.A stable filter ensures that excess nutrients are removed and helps to maintain the balance in the aquarium. This gives your plants the best conditions for strong growth and intense colors

Dennerle Plant System Set Nano The optimum nutrient supply for your nano aquarium Give your nano aquarium the perfect plant growth with the Dennerle Plant System Set Nano. This innovative 3-component fertilizer system provides your aquarium plants with a precise supply of all the important nutrients, minerals and trace elements. This enables you to achieve healthy growth, vibrant colors and lasting vitality for your plants. You can rely on more than 50 years of experience in aquarium plant research. Product benefits in detail: 3-component fertilizer system: the set consists of three specially coordinated components that supply your plants with all the necessary nutrients throughout their growth cycle. This promotes healthy, even plant growth. High yield: Thanks to the highly concentrated active ingredients, the Dennerle Plant System Set Nano is extremely economical. It is sufficient to use only small quantities to achieve a long-lasting effect, which saves you long-term costs. Magnificent plant growth & bright colors: The optimal nutrient supply ensures strong plants with intense colors. Not only will your aquarium plants thrive better, but they will also develop more vibrant hues that enhance the overall look of your aquarium. Complete nutrient supply: The set contains all the essential nutrients, minerals and trace elements that your plants need for healthy growth. This ensures that your plants not only thrive in the nano aquarium, but also become more resistant to disease. Many years of expertise: With over 50 years of research in aquaristics, Dennerle offers a product based on years of knowledge and experience. Rely on quality and innovation to get the best out of your aquarium. Easy to use: The set is particularly easy to use and can be dosed quickly. This allows you to concentrate on caring for your plants while benefiting from quick and visible results. Zoo Roco tip: For the best possible results with the Dennerle Plant System Set Nano, we recommend regularly adjusting the dosage to the growth of your plants and the volume of the aquarium. Make sure to distribute the fertilizer quantities evenly and carry out regular water changes to maintain the water quality. It is also advisable to use the set in combination with a stable CO2 supply and a high-quality filter system. This ensures that your plants receive all the nutrients they need and your aquarium remains healthy and balanced.

Dennerle Aquarium Starter RapidMixed culture of live cleaning and filter bacteria.Concentrate for rapid, biological activation of filter material and substrate in the aquariumFor a quick and safe aquarium startWith a guaranteed 500 million bacteria per milliliter when filledRemoves toxins (e.g. ammonia, nitrite) quickly and efficientlyFirst fish stocking possible after just 24 hoursMixed culture from living cleaning and filter bacteriaDennerle Aquarium Starter Rapid is a highly effective product for the fast, safe start of newly set up aquariums.It consists of two components:1. live filter bacteria - they settle on filter material and gravel and immediately start breaking down pollutants. The bacteria solution is highly concentrated, with a guaranteed 500 million bacteria per milliliter (when bottled).2. bacteria booster nutrient solution - the specially developed "bacteria food" ensures rapid growth and reproduction. Mode of action: Powerful nitrifying bacteria (Nitrosomonas, Nitrobacter) convert dangerous ammonia via nitrite into nitrate and thus detoxify the water Denitrifying bacteria (Paracoccus) convert nitrate into gaseous nitrogen in the anaerobic areas of the aquarium - especially in the substrate and filter - and thus reduce the nitrate content. At the same time, the filter bacteria break down plant and food residues, fish excrement, organic turbidity, proteins, fats, carbohydrates, organic pollutants and organic sludge.Dosage and application1. filter starter bacteria: Dosage: 100 ml for 50 - 100 L of aquarium water. Add half of the starter bacteria to the filter material and the other half to the aquarium water (25 °C).2. bacteria booster nutrient solution 1st day: 50 ml per 100 L aquarium water (25 ml / 50 L) 2nd - 6th day: 10 ml per 100 L aquarium water (5 ml / 50 L) Do not overdose!