Explore plant fertilizers, liquid CO2, reef dosing pumps and supplements used by aquarists.
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Find the gear behind the community's tanks.
Tanks, stands, lids
Canister filters, HOBs, protein skimmers, rollmats
Planted LEDs, high-actinic coral LEDs
Heaters, chillers, electronic controllers
Return pumps, wavemakers, gyres
Aquasoils, sands, dry reef rock, driftwood
Conditioners, RODI systems, marine salt mixes
Plant fertilizers, liquid CO₂, reef dosing pumps, calcium & alkalinity
Tools, food, testing, and the finishing touches
In community tanks
Chosen by aquarists
607 matching items · Most used first
SupplementationDr. Tim's Aquatics
Dr. Tim's Aquatics First Defense Freshwater (8 oz, treats 480 gallons) is a water conditioner designed to provide stress relief and immune support for freshwater fish. It neutralizes chlorine and chloramine, buffers against sudden pH changes, and detoxifies heavy metals, helping fish adapt during water changes, new additions, disease treatments, and other environmental changes.
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SupplementationBrightwell Aquatics
Brightwell Aquatics Fish Recover FW (500 mL) is an all-natural botanical extract remedy for bacterial infections in freshwater fish, treating sores, ulcers, fin rot, and cloudy eyes without harming the biological filter, plants, or invertebrates.
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SupplementationKorallen Zucht
Korallen-Zucht Flatworm Stop; specialized coral supplement that helps Acropora withstand and recover from Acropora-eating flatworms by strengthening coral tissue rather than acting as a conventional medication. Dose 1 mL per 25 gallons daily; pairs well with KZ Coral Booster.
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SupplementationBrightwell Aquatics
FlorinAxis is a bioavailable carbon source and Krebs cycle stimulator for planted aquariums from Brightwell Aquatics. It provides plants with organic carbon, humic and amino acids, and natural phytohormones, improving nutrient metabolism and accelerating the breakdown of organic material in the aquarium.
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SupplementationBrightwell Aquatics
Brightwell Aquatics FlorinBacter Clean is a copper-free, shrimp-safe blend of microbes and enzymes for freshwater aquariums that cleans plants, driftwood, decorations, and tank walls while reducing organic carbon, ammonia, nitrite, nitrate, and phosphate.
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SupplementationBrightwell Aquatics
Brightwell Aquatics FlorinBacter Clean (250 mL) is a copper-free, shrimp-safe blend of microbes and enzymes for freshwater aquariums that cleans plants, driftwood, decorations, and tank walls while reducing organic carbon, ammonia, nitrite, nitrate, and phosphate.
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SupplementationBrightwell Aquatics
Brightwell Aquatics FlorinBacter Clean Shrimp is a copper-free microbial and enzyme blend that cleans plants, driftwood, decorations, and tank walls in freshwater planted and shrimp aquariums, reducing ammonia, nitrite, nitrate, phosphate, and detritus.
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SupplementationBrightwell Aquatics
Brightwell Aquatics FlorinBacter One is a copper-free microbial and enzyme starter culture that jump-starts the ammonia cycle and establishes biological filtration in freshwater planted and shrimp aquariums.
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SupplementationBrightwell Aquatics
Brightwell Aquatics FlorinBacter7 is a suspension of non-pathogenic aerobic and anaerobic microbes and enzymes for all freshwater and planted aquariums, enhancing nitrification, denitrification, and organic waste degradation.
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SupplementationBrightwell Aquatics
Brightwell Aquatics FlorinBacter7 Shrimp is a copper-free, shrimp-safe suspension of non-pathogenic aerobic and anaerobic microbes and enzymes for planted and shrimp freshwater aquariums, enhancing nitrification, denitrification, and organic waste degradation while limiting algae and cyanobacteria.
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SupplementationBrightwell Aquatics
Brightwell Aquatics Florin-Fe is a dual-action iron supplement for planted aquariums, providing both ferrous and ferric iron for immediate and slow-release absorption; it supports chlorophyll production and enzyme activation, with daily dosing recommended to maintain iron at 0.05-0.10 ppm.
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SupplementationBrightwell Aquatics
Brightwell Aquatics FlorinGro Plus is a nitrate-based liquid fertilizer for planted freshwater aquariums that house shrimp. The copper-free, shrimp-safe formula provides essential nitrogen to promote lush, vibrant plant growth while maintaining stable water chemistry in pH 7+ tanks.
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SupplementationBrightwell Aquatics
Brightwell Aquatics Florin-K is a concentrated, chloride-free potassium supplement for planted aquariums; it enables enzyme activation, aids photosynthesis and nutrient exchange, encourages plant growth, and helps prevent chlorosis and tissue decay.
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SupplementationBrightwell Aquatics
Brightwell Aquatics Shrimp FlorinMulti is a copper-free, shrimp-safe complete multi-nutrient fertilizer with iron for planted aquariums; it provides 13 critical elements (no nitrogen or phosphorus) for plant health, growth, and coloration, dosed twice weekly per 6-10 gallons.
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SupplementationSeachem
Seachem Flourish Excel bioavailable organic carbon source for planted aquariums; an alternative to CO2 injection that can be used alone or together with CO2. Initial dosing: 1 capful per 10 gallons; maintenance 1 capful per 50 gallons daily or every other day.
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SupplementationSeachem
Seachem Flourish comprehensive planted aquarium supplement with micro and trace elements including calcium, magnesium, and iron; no significant nitrogen or phosphorus. Dosing: 1 capful per 60 gallons once or twice weekly.
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SupplementationAquaforest
Aquaforest highly concentrated fluoride supplement (50 mL) supporting coral calcification and skeletal tissue growth; strengthens blue and white coloration of SPS corals. Dosing: 1 drop per 27 gallons daily.
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SupplementationTriton
Triton ultra-pure Fluorine supplement (1000 mL) to raise fluorine levels without increasing other elements; use with Triton ICP-OES testing to determine the correct dose.
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SupplementationFluval
The Fluval CO2 Indicator Set monitors carbon dioxide levels in aquarium water, visibly changing color to indicate low, ideal, or high CO2 for healthy live plants. It includes a glass reservoir, suction cup, and indicator solution that lasts up to 30 days.
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SupplementationBlue Life USA
Blue Life USA Flux Rx fluconazole aquarium treatment effective against bryopsis and green hair algae; reef-safe with corals present but remove macroalgae and refugium before use. Available in sizes treating 100, 200, and 350 gallons.
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SupplementationFritz Aquatics
Fritz-Zyme TurboStart 900 is a live nitrifying bacteria product containing the same proven strains as FritzZyme 9 but at 15 times the concentration. It reduces fish loss from toxic ammonia and nitrite and completely cycles aquariums in five days or less, and is available in 1, 4, 16, 32, and 128 oz sizes.
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SupplementationPolyplab
PolypLab Genesis bacterial supplement; a custom blend of bacterial strains at over 80 billion cells/mL that forms nutrient-consuming biofilms. Enhances coral and zooplankton nutrition; ideal for cycling new tanks and boosting established systems.
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SupplementationSeachem
Seachem Glass Bubble Counter; a simple and elegant tool for monitoring the rate of CO2 injection in planted aquaria. Mounts upright on the aquarium exterior with suction cups; uses standard 6 mm airline tubing.
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SupplementationSeachem
Seachem Glass Inline CO2 Diffuser; a pollen-style inline diffuser placed in the filter outflow line to efficiently diffuse CO2 while minimizing equipment visibility in the aquascape. Ensures maximum CO2 dissolution for consistent dosing; available in 13 mm and 17 mm sizes.
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SupplementationSeachem
Seachem Glass U Tube for airline tubing; strong clear glass tube that routes CO2 or air tubing over the aquarium rim without bending or creasing, minimizing visibility. Available in 10 mm and 20 mm sizes; fits standard 6 mm airline tubing.
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SupplementationCO2Art
CO2Art Green CO2 Resistant Polyurethane Tubing is 4/6 mm CO2-resistant tubing for planted aquarium CO2 equipment, available in 10 or 20 foot lengths and clear, black, silver, green, or blue.
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SupplementationFluval
Fluval Plant Gro+ is an all-in-one liquid micro-nutrient fertilizer for freshwater planted aquariums, with an iron-enriched, chelated formula that is 6x stronger than previous versions. The 8.4 oz (250 mL) bottle promotes vigorous growth, deep coloration, and strong roots while preventing mineral deficiencies; dose 5 mL per 60 gallons weekly. Safe for fish and all aquarium inhabitants; for freshwater use only.
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SupplementationCO2Art
The CO2Art Inline CO2 Diffuser is a metal-bodied inline diffuser with a replaceable ceramic membrane that mounts on external filter lines for better CO2 absorption, in 12/16 or 16/22 sizes.
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SupplementationCO2Art
The Co2Art In-Tank Flux CO2 Diffuser V2 is an in-tank CO2 diffuser for planted aquariums with an improved ceramic membrane that creates a nano mist of tiny bubbles. The increased surface area readily dissolves CO2 into the water, optimizing CO2 uptake for efficient plant absorption with less waste.
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SupplementationCO2Art
The CO2Art IO In-Tank CO2 Diffuser - Acrylic Series uses a Nano CO2 Mist Technology ceramic membrane to dissolve CO2 into streams of tiny bubbles for high dissolution rates and efficient plant absorption. Available in Small for tanks under 40 gallons and Large for tanks over 40 gallons, it includes suction cup mounts, a replaceable ceramic membrane, and a discreet acrylic body.
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