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
34 matching items · Most used first
SupplementationUltum Nature Systems
The Aquarium Suction Cups are marine-grade suction cups with removable snap-on clips for securing aquarium airline and CO2 tubing snug against glass or acrylic tank walls; built-in clips pop off for use as clean, direct glass-to-glass mounts for glass lily pipes. 5, 10, and 20 packs.
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SupplementationUltum Nature Systems
The Base Holder - Disposable CO2 Cartridge is a simple, heavy-duty holder that keeps standard 90g disposable threaded CO2 cartridges perfectly upright, organized, and safe during routine tank maintenance. Grey and White.
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SupplementationUltum Nature Systems
2.5 lb CO2 cylinder from Ultum Nature Systems, designed for use with the UNS Pro Dual Stage CO2 Regulator for planted aquariums. Features an on/off valve instead of a pin valve. It is sold empty and must be filled before use.
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SupplementationUltum Nature Systems
CO2 paintball cylinder from Ultum Nature Systems, designed for use with the UNS Pro Mini Dual Stage CO2 Regulator for planted aquariums. Features an on/off valve instead of a pin valve. It is sold empty and must be filled before use.
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SupplementationUltum Nature Systems
The CO2 Regulator - Pressure Plate Spare Parts Set is a precision repair kit that restores a CO2 regulator's internal pressure plate to factory specifications; it resolves zero output pressure failures caused by locked, fatigued, or unseated internal pressure mechanisms. Universal dual compatibility across the UNS Mini and UNS Pro Dual Stage Regulators; cost-effective alternative to replacing the regulator body.
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SupplementationUltum Nature Systems
The Ultum Nature Systems Pro CO2 Manifold Block is a modular add-on that attaches to the UNS Pro Dual Stage CO2 Regulator so a single CO2 cylinder can feed multiple planted aquariums. It combines a detachable bubble counter, built-in check valve and precise needle valve to give each additional tank independent bubble-count control with backflow protection.
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SupplementationUltum Nature Systems
The Ultum Nature Systems Pro Dual Stage CO2 Regulator is a professional-grade CO2 delivery system for planted aquariums, with two gauges for monitoring output pressure and remaining CO2, a failsafe dual-stage mechanism, integrated bubble counter, and solenoid for simple, precise CO2 dosing. It fits standard CGA-320 CO2 cylinders and features a bubble counter manifold that can be expanded with manifold blocks to distribute CO2 to multiple aquariums from one cylinder; includes extra O-rings, bubble counter, Allen key, CGA-320 adapter, and power adapter.
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SupplementationUltum Nature Systems
The Ultum Nature Systems Pro Mini Dual Stage CO2 Regulator is an all-in-one CO2 delivery solution for planted aquariums. It features a dual stage failsafe mechanism, built-in solenoid, and included bubble counter for simple, precise CO2 management, and works with standard CGA-320 CO2 cylinders and paintball canisters. Includes adapters, extra washer O-rings, allen key, and power adapter.
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SupplementationUltum Nature Systems
The Ultum Nature Systems Disposable CO2 Cartridge is a 95g single-use threaded steel CO2 cartridge for nano aquariums and desktop aquascapes; it provides a clean, mess-free carbon dioxide supply with fast, tool-free swaps when threaded into a UNS Micro or UNS Mini Dual Stage CO2 regulator. Ideal for quick maintenance, travel setups, and small footprints. Sold in 1, 3, and 5 packs; cartridge only.
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SupplementationUltum Nature Systems
The UNS Advanced Check Valve acts as a one-way firewall for your CO2 system or air pump. When equipment is placed below the water line, it lets gas flow into the aquarium effortlessly but slams shut the second backflow begins, preventing water from siphoning back into your solenoid, needle valve, or air pump motor. Features advanced one-way sealing mechanics, tool-free push-in fittings, and heavy-duty solid construction that withstands pressurized systems. Fits standard 4/6mm airline or CO2-resistant tubing.
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SupplementationUltum Nature Systems
The UNS CO2 Cylinder Pro (10LB) is a heavy-duty, premium aluminum gas tank engineered to fuel thriving, high-tech planted aquariums. Built for serious aquascapes, it combines durability, portability, and precise control so your plants get steady carbon dosing for fuller, healthier growth. Features manual on/off twist valve, brushed aluminum construction, substantial 10LB capacity, DOT3AL certification, and universal CGA320 threads. On a 40- to 60-gallon planted aquarium, a 10LB cylinder typically lasts 9 to 12+ months before refilling. Sold empty due to federal transport regulations; must be filled locally before use.
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SupplementationUltum Nature Systems
The UNS CO2 Cylinder Pro 2.5LB is a heavy-duty brushed aluminum gas tank (CGA320) for pressurized CO2 systems in planted aquariums, DOT3AL certified with a manual on/off twist valve and corrosion-resistant finish. It holds 2.5 lbs of CO2, connects to all standard North American CO2 regulators, and is sold empty per federal regulations for local filling.
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SupplementationUltum Nature Systems
The UNS CO2 Cylinder Pro (20LB) is a heavy-duty, premium aluminum gas tank engineered to fuel thriving, high-tech planted aquariums that demand long-term stability and an uninterrupted CO2 supply. Lightweight, corrosion-resistant, and easy to handle, it is ideal for large show tanks, fish rooms, or multi-tank setups. Features manual on/off twist valve, brushed aluminum construction, massive 20LB capacity, DOT3AL certification, and universal CGA320 threads. Sold empty due to federal transport regulations; must be filled locally before use.
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SupplementationUltum Nature Systems
The UNS CO2 Cylinder Pro (5LB) is a compact, heavy-duty aluminum gas tank engineered to give planted-tank hobbyists reliable, long-lasting CO2 delivery without the bulk. Lightweight, corrosion-resistant, and easy to handle in humid cabinet environments, it is the ultimate sweet spot for dedicated pressurized systems. Features manual on/off twist valve, brushed aluminum construction, versatile 5LB capacity, DOT3AL certification, and universal CGA320 threads. On a 29- to 40-gallon planted aquarium, a 5LB cylinder typically lasts 6 to 9+ months before refilling. Sold empty due to federal regulations; must be filled locally before use.
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SupplementationUltum Nature Systems
The UNS CO2 Diffuser breaks CO2 bubbles down into a fine, swirling micro-diffusion mist that plants can absorb far more efficiently, using a specialized white ceramic disc. Its tough polycarbonate construction won't crack or snap like delicate glass diffusers, and the minimalist profile with smooth edges tucks neatly against the glass.
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SupplementationUltum Nature Systems
The UNS CO2 J-Shape Pollen Glass Diffuser merges premium artistic glasswork with high-performance atomization. Its unique J-shape profile wraps tightly and tucks discreetly into aquarium corners. Equipped with a premium high-density pollen-style ceramic disc, it shears raw gas into an ultra-fine mist that stays suspended in the water column longer for maximum plant absorption. Ceramic disc diameter: 2.5 cm. Recommended for 5 to 10 gallon nano and desktop aquariums.
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SupplementationUltum Nature Systems
The UNS CO2 Paintball Adapter in Space Grey attaches your CO2 regulator to a paintball CO2 tank. A built-in pressure relief hole is included for increased safety when removing the adapter from the CO2 cylinder. This listing is for the paintball adapter only; a CO2 regulator is not included.
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SupplementationUltum Nature Systems
The UNS CO2 Paintball Cylinder (16 Oz.) is a lightweight, corrosion-resistant refillable aluminum tank ideal for nano and compact desktop aquascapes. Its ultra-compact 16oz capacity tucks away in desktop stands while delivering a long-lasting carbon supply. Features standard paintball pin valve threading for direct connection to paintball-compatible regulators like the UNS Mini Dual Stage Regulator. Note: cylinders are sold EMPTY due to federal regulations and must be filled locally at a paintball shop, welding supply store, or homebrew supplier.
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SupplementationUltum Nature Systems
The UNS CO2 Paintball Cylinder (24 Oz.) is a lightweight, corrosion-resistant refillable aluminum tank ideal for nano and compact desktop aquascapes. Its 24oz capacity delivers a long-lasting carbon supply while tucking away in small under-tank cabinets. Features standard paintball pin valve threading for direct connection to paintball-compatible regulators like the UNS Mini Dual Stage Regulator. Note: cylinders are sold EMPTY due to federal regulations and must be filled locally at a paintball shop, welding supply store, or homebrew supplier.
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SupplementationUltum Nature Systems
The UNS CO2 Paintball Kit (16oz Cylinder) bundles a refillable 16oz aluminum cylinder with the UNS Mini Dual Stage Regulator for a compact CO2 system ideal for nano to small planted aquariums. It delivers a controlled, constant stream of CO2 to enhance plant coloration, accelerate carpet growth, and keep algae at bay. Includes the 16oz cylinder, dual stage mini CO2 regulator, small CO2 diffuser, and UNS Pro CO2 tubing. Note: cylinders are sold EMPTY due to federal regulations and must be filled locally.
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SupplementationUltum Nature Systems
The UNS CO2 Paintball Kit (24oz Cylinder) bundles a refillable 24oz aluminum cylinder with the UNS Mini Dual Stage Regulator for a complete CO2 system for small to medium planted aquariums. It delivers a controlled, constant stream of CO2 to enhance plant coloration, accelerate carpet growth, and keep algae at bay. Includes the 24oz cylinder, dual stage mini CO2 regulator, medium CO2 diffuser, and UNS Pro CO2 tubing. Note: cylinders are sold EMPTY due to federal regulations and must be filled locally.
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SupplementationUltum Nature Systems
The UNS Micro CO2 Bubble Counter provides a crystal-clear visual of CO2 dosing rates with an integrated check valve that prevents aquarium water from backflowing into the solenoid and regulator. It features a smart top-facing quick-fill port with an included syringe, mounts directly to the UNS Micro CO2 Regulator, and is built from high-clarity acrylic with a machined alloy base.
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SupplementationUltum Nature Systems
The UNS Micro CO2 Complete Kit is a 7-piece all-in-one pressurized CO2 system built for nano and desktop aquariums under 15-20 gallons. It includes a micro regulator with gunmetal aluminum finish, integrated low-heat 12V DC solenoid, bubble counter with built-in check valve, 95g disposable CO2 cartridge, cylinder stand, 5 ft of pressure tubing, and a small ceramic diffuser.
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SupplementationUltum Nature Systems
A precision-machined alloy adapter that lets the compact UNS Micro Regulator screw directly onto refillable UNS Paintball CO2 Cylinders (16oz and 24oz) for longer gas runtimes and lower long-term operating costs than disposable cartridges. Durable, leak-free machining provides an airtight seal with quick twist-on installation. Designed exclusively for the UNS Micro Regulator and paintball-style cylinder threads; not compatible with large standard CGA320 bulk tanks. Micro Regulator and cylinders sold separately.
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SupplementationUltum Nature Systems
The UNS Micro CO2 Regulator is the smallest model in the UNS lineup, an ultra-compact aluminum regulator in gunmetal finish for nano planted aquariums. It offers adjustable pressure control from 25-60 PSI and connects directly to standard 95g disposable threaded CO2 cartridges; a solenoid and bubble counter can be added for automation and flow monitoring.
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SupplementationUltum Nature Systems
The UNS Micro CO2 Regulator Kit bundles an ultra-compact aluminum regulator in gunmetal finish, a silent low-heat electronic solenoid, and a bubble counter with integrated check valve for nano planted aquariums and desktop aquascapes. It maintains 25-60 PSI operating pressure and pairs with the 95g UNS disposable CO2 cartridge.
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SupplementationUltum Nature Systems
The UNS Micro CO2 Solenoid is an electronic magnetic valve that automates CO2 injection schedules by plugging into a standard light timer or smart plug. It runs on cool, silent 12V DC power, has an ultra-compact footprint for mounting directly to the UNS Micro CO2 Regulator, and includes a 12V DC power adapter.
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SupplementationUltum Nature Systems
The UNS Mini Dual Stage CO2 Regulator takes 700+ PSI cylinder pressure and tames it into a safe, steady stream for your aquarium. Features an advanced dual-stage failsafe that eliminates end-of-tank dumps, an integrated 12V DC solenoid for timer automation, pre-installed CGA320 adapter plus a paintball adapter for universal tank compatibility, adjustable 0 to 50 PSI output, and a built-in pressure relief safety valve. Includes the regulator, solenoid and 12V power adapter, precision bubble counter, both tank adapters, and a setup tool set with replacement O-rings.
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SupplementationUltum Nature Systems
UNS Plant Food Max is a nutrient-rich all-in-one liquid fertilizer (500ml) providing essential macro and micronutrients for established, densely planted aquariums such as high-tech, stem plant-heavy, and Dutch-style aquascapes. It is invertebrate-safe for shrimp and snails, prevents yellowing and stunted growth, and is dosed at 1 pump per 5 gallons every other day.
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SupplementationUltum Nature Systems
UNS Plant Food Min is a moderately concentrated liquid plant fertilizer (500ml) formulated for new aquariums, low-tech setups, Iwagumi layouts, and tanks with heavy bioloads or nutrient-rich substrates. It delivers balanced potash, magnesium, and chelated micronutrients without overloading the water column, is safe for shrimp, snails, and fish, and is dosed at 1 pump per 5 gallons every other day.
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