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Plant fertilizers, liquid CO₂, reef dosing pumps, calcium & alkalinity
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In community tanks
Chosen by aquarists
5,380 matching items · Most used first
FilterEHEIM
The EHEIM LOOPpro 38000 is a complete ready-to-install pond flow-through filter set with UVC clarifier for ponds up to 38,000 litres. It features a unique built-in pre-filter, 4-stage filtration in separately sealed chambers, Easy Clean backwash, and a saturation indicator; the set includes a matched energy-saving pump, a CLEARUVC 60W clarifier, 5 m spiral hose, and original EHEIM filter media.
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OtherFiji Cube
The Fiji Cube LoPro External Overflow Box (1600 GPH) is a low-profile external overflow with three drains for drilled aquariums. Its removable o-ring-sealed weir lifts out for cleaning without disturbing dry-side plumbing, and it supports a Bean Animal setup for quiet, redundant overflow.
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Substrates & AquascapingLiquid Gardens
Liquid Gardens Lotus Pods (3 count) are decorative freshwater botanicals offering natural shelter for shrimp and small fish, biofilm growth surfaces, and mild tannin release for blackwater biotope setups.
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OtherBulk Reef Supply
Low-profile bulkhead overflow strainers from Lifegard Aquatics that extend only fractions of an inch past the bulkhead. Available in slip and threaded versions from 1/2 to 2 inches, they keep fish, snails, and debris out of overflows, sumps, and pumps.
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OtherHanna Instruments
The Hanna HI98129 is a waterproof pocket tester that measures pH, conductivity, and TDS in a single low-range combo pen. It offers simple one-button operation for quick spot-checks of aquarium water.
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OtherNeptune Systems
The Neptune Systems Low-Profile Advanced Leak Detection Probe is used with the Neptune ALD Advanced Leak Detection Module and any Apex controller to alert you of possible leaks. The low-profile design slips under carpet and hides away easily, and it plugs into the ALD module with a modular RJ11 connection. Place probes strategically around the stand, sump, and tank to catch leaks early.
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FilterReef Octopus
The Reef Octopus LR-150 Light Reactor is a natural filter that utilizes macroalgae like Chaetomorpha to absorb and remove algae-producing nutrients from aquarium water; as macroalgae grows it consumes nutrients, which are removed when harvested. Also a safe haven for copepods and amphipods. Unique triangular waterproof LED strip (IP67) inside the reactor maximizes light exposure with 360-degree coverage; stabilizes pH and lowers dissolved CO2; can be installed externally or in-sump; tank volume 50-160 gal; body 6 in, height 20 in; LED 20W; AQ-1200 circulation pump.
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FilterReef Octopus
The Reef Octopus LR-200 Light Reactor is a natural filter that utilizes macroalgae like Chaetomorpha to absorb and remove algae-producing nutrients from aquarium water; as macroalgae grows it consumes nutrients, which are removed when harvested. Also a safe haven for copepods and amphipods. Unique triangular waterproof LED strip (IP67) inside the reactor maximizes light exposure with 360-degree coverage; stabilizes pH and lowers dissolved CO2; can be installed externally or in-sump; tank volume 100-260 gal; body 8 in, height 20 in; LED 20W; AQ-2000 circulation pump.
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OtherNeptune Systems
An AquaBus accessory module from Neptune Systems for Apex aquarium controllers that creates a realistic moonlight cycle in the reef tank. It drives separately sold LSM LED strings of 2 to 5 moonlight LEDs, dimming them in phase with the true lunar cycle so moonrise and set times match nature. Plug-and-play with upgradeable firmware and dual AquaBus connectors for expansion; requires a Neptune Apex controller.
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SupplementationBrightwell Aquatics
Brightwell Aquatics Lugol's Solution is an extremely powerful iodine/iodide solution for advanced reef aquarists, dosing iodine for corals and invertebrates and creating coral dips, sold in sizes up to 30 mL.
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OtherNeptune Systems
Moonlight LED strings from Neptune Systems that connect to the LSM Lunar Simulator Module on an Apex controller to create a true lunar cycle in the reef tank. Available in strings of 2, 3, 4, or 5 high-intensity LEDs spaced 24 inches apart with wide 100-plus-degree lenses, each LED covers about 12 inches and their intensity is adjustable from 0 to 100 percent; the LSM module is not included and required.
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LightsGiesemann
The Giesemann lynk pro WiFi Controller puts wireless control of Giesemann LED fixtures at your fingertips, with individual channel dimming, custom lighting schedules, and sunrise/sunset effects via the lynk pro App; compatible with Pulzar G3, Stellar, and MINOX LED fixtures.
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OtherNyos
Nyos LYQ-RED Coral Food (250 mL) is a concentrated liquid coral food with a broad particle spectrum from 5 microns to 2mm (including Calanus copepods), suitable for SPS, LPS, soft corals, and anemones. Rich in omega 3/6/9 fatty acids, amino acids, vitamins, and astaxanthin, it resists breaking down in water for easier capture and feeds without excess phosphate; start at 10 mL per 250 gallons daily.
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OtherMilwaukee Instruments
The Milwaukee MA887 is a digital seawater refractometer that measures salinity by refractive index. It displays results in PSU, parts per thousand, or specific gravity within seconds, with automatic temperature compensation, one-point calibration, and an IP65-rated waterproof housing.
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OtherBashsea
The Bashsea Mad Rack is a commercial-grade coral frag rack laser-cut from 3/8-inch cast acrylic with an open-flow slotted design. It holds up to 170 coral frag plugs (in the 11 x 22 inch size) and is sold in blue or black for high-flow grow-out and display applications.
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OtherBashsea
The Bashsea Mad Rack Pro is a commercial-grade coral frag rack built from thick 3/8 inch cast acrylic with 100% laser-cut edges for rigidity and a professional finish, suited to retail displays and grow-out systems. Its variable-gap slot design holds frag plugs securely in high-flow environments while keeping placement flexible and water flow open under and through the rack for cleaner conditions and faster coral growth. Available in three sizes: Mad Rack Pro 6-11 (42 frags, 11x6x2 inches), 11-11 (78 frags, 11x11x3 inches), and 11-22 (142 frags, 22x11x3 inches).
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Substrates & AquascapingUltum Nature Systems
Madra Wood is a rugged, sculptural aquarium driftwood with intricate knots, deep whorls, and weathered texture, ideal as a centerpiece or accent in planted tanks. Its grooved surface is excellent for anchoring mosses, ferns, and Bucephalandra, and it pairs well with Seiryu or Dragon Stone; rinse and soak or boil before use to waterlog it and manage tannins.
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OtherMag-Float
The Mag-Float 350 is a large floating magnetic glass aquarium cleaner made with powerful rare-earth neodymium magnets. Drag the outer magnet along the tank and the inner magnet follows, scraping off algae; the inner magnet floats for easy retrieval. Recommended for glass tanks up to 350 gallons, glass thickness up to 5/8 in; large debris-free cleaning pad, non-toxic ABS plastic, scraper holder and blade included.
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OtherMag-Float
Replacement glass scraper blades for Mag-Float floating magnet cleaners (2 pack). Large/Large+/X-Large blades fit Mag-Float 350, 400, and 500.
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OtherMag-Float
The Mag-Float 1000 PRO is a heavy-duty floating magnetic algae cleaner for glass and acrylic aquariums up to 1000 gallons with 1-1/2" to 2" thick walls (8.25" x 3.5" x 1.375"). Powerful neodymium magnets drive the inner pad as you move the outer handle, the inner unit floats for easy retrieval, and the debris-free cleaning pad helps prevent scratches (not suited for curved cylinder tanks).
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OtherMag-Float
The Mag-Float-125 Medium (model 00125) is a floating magnetic aquarium cleaner with powerful neodymium rare earth magnets that cleans glass tanks up to 125 gallons with thickness up to 3/8 inch while keeping arms dry. The inner magnet floats to the top for easy retrieval if it disconnects, and the sand-free cleaning pad prevents scratches. Made from non-toxic materials for freshwater and saltwater tanks.
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OtherMag-Float
The Mag-Float 25 Mini is a floating magnetic aquarium cleaner for glass and acrylic tanks up to 10 gallons, using powerful neodymium rare earth magnets. The inner magnet floats for easy retrieval, letting you clean algae without getting your hands wet.
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OtherMag-Float
The Mag-Float 30 is a small floating magnetic algae cleaner for glass freshwater or saltwater aquariums up to 30 gallons with glass up to 3/16" thick (2 3/8" x 1 3/8" x 1"). Rare-earth neodymium magnets drive the inner pad from outside the tank, the inner unit floats if detached for easy retrieval, and the debris-free cleaning pad helps prevent scratches.
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OtherMag-Float
The Mag-Float 350 is a large floating magnetic aquarium cleaner for glass tanks up to 350 gallons with glass thickness up to 5/8 inch. Its powerful neodymium magnets drive an algae-scraping inner magnet that floats to the surface for easy retrieval, and a scraper holder with blade is included.
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OtherMag-Float
The Mag-Float 360 Large is a floating magnetic algae cleaner designed for acrylic aquariums up to 350 gallons with glass/acrylic up to 5/8" thick (3.25" x 2.5" x 1", scraper blade included). Powerful neodymium magnets drive the inner cleaning pad as you move the outer handle, the inner unit floats for easy retrieval if separated, and the debris-free pad helps prevent scratches.
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OtherMag-Float
The Mag-Float 400 Large+ is a floating magnetic glass aquarium cleaner using powerful rare-earth neodymium magnets — drag the outer handle along the glass and the inner scrubber follows, scraping off algae while keeping your hands dry. The inner magnet floats for easy retrieval, the debris-free cleaning pad helps prevent scratches, and a scraper with blade is included for stubborn algae. Sized for glass tanks with walls up to 3/4 inch thick; non-toxic and safe to leave attached 24/7.
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OtherMag-Float
The Mag-Float 410 is a large-plus floating magnetic cleaner for acrylic freshwater or saltwater aquariums up to 400 gallons with walls up to 3/4" thick (6" x 2.5" x 1"). Powerful neodymium magnets drive the inner pad from outside the tank, the inner unit floats if detached for easy retrieval, and the debris-free cleaning pad plus included scraper blade help remove algae without scratching.
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OtherMag-Float
The Mag Float 500 is an extra-large floating magnetic glass aquarium cleaner (item #00500) recommended for tanks up to 500 gallons with glass thickness from 3/4 to 1-1/4 inches. Powerful rare-earth neodymium magnets pull the inner scrubber along as you move the outer handle, and the inner magnet floats for easy retrieval if the magnets separate. Made from non-toxic ABS plastic with a debris-shedding cleaning pad to avoid scratches, and includes a scraper holder and blade.
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OtherMag-Float
The Mag-Float 510 is an extra-large floating magnetic cleaner for acrylic freshwater or saltwater aquariums up to 500 gallons with walls 3/4" to 1-1/2" thick (6" x 2.5" x 1"). Powerful neodymium magnets drive the inner pad from outside the tank, the inner unit floats if detached for easy retrieval, and the debris-free cleaning pad plus included scraper blade help remove algae without scratching.
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OtherMag-Float
Two replacement scraper blades for Mag-Float Glass Aquarium Floating Magnet Cleaners, sized for the Large/Large+/X-Large models (Mag-Float 350, 400, and 500).
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