Discover aquarium tools, test kits, food and accessories and see the tanks using them.
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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
1,688 matching items · Most used first
OtherMilwaukee
Milwaukee pH calibration solution (pH 7.01) sold in single-use packets for calibrating pH probes or pens, compatible with all pH meters and probes. Calibrate probes every 30-60 days for reliable readings; for reef tanks use 7.0 and 10.01 points, for calcium reactors use 4.01 and 7.01.
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OtherHikari
Hikari Mini Algae Wafers are sinking wafers for smaller plecostomus and algae-eating bottom feeders, including marine herbivores, snails, and crustaceans; rich in nutrients for immune health.
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OtherReef Rax
The Reef Rax Mini Branching Frag Rack is a reef-safe resin frag rack that mimics live rock, mounting via reef-safe magnets (max 1/4 in tank thickness) with 4 frag holes (0.45 in diameter); available in Purple, Grey, and Brown.
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OtherV2O Aquarium Foods
V2O Aquarium Foods' Mini Marine Mysis Shrimp Frozen Cubes are fresh-frozen intact mini marine mysis shrimp, about half the size of freshwater mysis. They are an ideal food for seahorses, sea dragons, and other syngnathids, and are readily eaten by all species of marine and freshwater tropical fish.
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OtherNot specified
A small plastic check valve with double hook for 4/7 mm hose (1/4 inch hose, or inner diameter 4-5 mm hose), green.
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OtherEcosystem Aquarium
EcoSystem Aquarium's Miracle Mud is a deep-water oceanic mud blended with minerals and trace elements, serving as a refugium substrate that supports aerobic and anaerobic biofiltration, macroalgae growth, and replenishment of trace elements in reef aquariums.
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OtherTwo Little Fishies
Two Little Fishies SeaVeggies mixed flakes (30 g) contain only seaweed, no fillers, a great natural choice to provide the nutrition your fish need to remain healthy, colorful, grow, and reproduce. Intended for herbivores such as tangs and surgeonfish, angelfish, moorish idols, parrotfish, large butterflyfish, cichlids and goldfish.
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OtherVivid Creative Aquatics
The Vivid Creative Aquatics MJC-SC Crevice Vacuum Tool turns small pumps (Marineland Maxi-Jet 600/1200, Sicce Syncra Nano with included snap-in adapter, Eheim CompactON 300) into a compact aquarium vacuum with a narrow tip for pulling detritus from tight corners and behind rockwork. It connects to any pump with a 3/4" slip input or tubing, with output routed to a bucket or a fine micron filter sock, and is printed in reef-safe PETG plastic.
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OtherVivid Creative Aquatics
The Vivid Creative Aquatics MJV-SC Vacuum Attachment turns a Sicce Syncra Nano or Marineland MaxiJet pump into an aquarium cleaning vacuum for removing detritus from bare-bottom tanks and sumps. It concentrates intake flow for effective cleaning and includes a removable debris screen to protect the pump.
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OtherModern Reef
Modern Reef Complete Reef Food (100 ml) is a complete reef food for all modern reef aquarium inhabitants like micro-organisms, symbiotic bacteria, filter feeders, and corals, directly and indirectly. Improves vitality and immune system; boosts coral growth and coloration; contains liquid and solid food, amino acids, vitamins, fatty acids, and micronutrients by proportion; helps fix the cause of the 'Greening Effect' for better yellow/orange pigments; designed for use with the Proportional Consumption RKS.
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OtherModern Reef
Modern Reef ICP Duo 1-pack includes 1 reef water analysis plus 1 RO/DI water analysis: 56 parameters for reef water and 49 essential parameters for RO/DI water. Uses ICP-OES/MS, chromatography, and AI Analyst quality control with 24-hour results; intelligent online system delivers personalized correction dosages and anomaly management.
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OtherModern Reef
Modern Reef Polypop (100 ml) is designed especially for SPS polyp coloration, maximum extension, and coral pigmentation, complementing Complete Reef Food and the proportional consumption reef-keeping system. It induces maximal polyp extension and assists pigmentation, especially on SPS coral polyps, boosts yellow/orange pigment excitation, strengthens coral immune system against pests and diseases, and induces faster base creation on new Acropora frags. Dose during daytime when lights are on; nutrients must be detectable (PO4 +/-0.03-0.04 mg/L).
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OtherModern Reef
Modern Reef Reef Water Analysis Pro (1 reef water analysis) tests up to 56 parameters, including KH, high-resolution salinity, nutrients, pollutants, and water clarity, using ICP-OES/MS and chromatography in dual state-of-the-art laboratories with AI Analyst quality control. Results within 24 hours; online system provides personalized correction dosages, maintenance guidance, and anomaly task management.
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OtherAvidAqua
The AvidAqua ModMag Giga is a rust-free, ultrasonically double-sealed modular magnet set for securely mounting frag racks, probe holders, and accessories on glass or acrylic up to 3/4-inch thick.
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OtherAvidAqua
The ModMag Mega is a modular aquarium magnet set from AvidAqua for attaching accessories inside and outside the tank. Its ultrasonically welded, double-sealed construction is rust-free, includes a shake test to verify the seal, and works on glass or acrylic up to 1/2 inch thick.
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OtherLoc-Line
Loc-Line Modular Hose Segments are flexible modular plumbing for endless plumbing configurations, commonly used on return lines and closed loops where directing water flow matters. Six segments of 1/2 inch hose measures 5.5 inches and six segments of 3/4 inch hose measures 6 inches; segments snap-fit together and can be cut or joined to any length. Black, push-connect articulated construction.
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OtherNeptune Systems
The Neptune Systems MOS (Magnetic Optical Sensor) is a compact waterproof optical water-level sensor that plugs into an Apex FMM port and uses reflected infrared light to signal wet/dry state changes. It is used for building auto-top-off systems, high-level sump warnings, and reservoir level monitoring, and mounts magnetically on glass or acrylic up to 1/2" thick.
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OtherISTA
The ISTA Moss Cultivation Pad is a high-grade ceramic pad (available in 2" round, 2.5" square, and 3" square) that holds moss in place with a stainless steel mesh net and corner hooks, giving freshwater aquarium moss a stable foundation to grow on without tying it to hardscape.
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OtherAvidAqua
The AvidAqua MPO Duo is a magnetic two-probe organizer for modern water monitoring systems, holding two standard probes (pH, ORP, salinity, temperature) plus two guide tubes for automated testing systems; it uses double-sealed, rust-free ModMag magnets and a patent-pending Slide-Loc system instead of thumbscrews.
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OtherAvidAqua
The AvidAqua MPO Quatro is a magnetic four-probe organizer for modern water monitoring systems, holding four standard probes (pH, ORP, salinity, temperature) plus two guide tubes for automated testing systems; it uses double-sealed, rust-free ModMag magnets and a patent-pending Slide-Loc system instead of thumbscrews.
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OtherNeptune Systems
A 12-inch tray that holds filter socks in place inside a sump, providing mechanical pre-filtration by trapping suspended particles before water reaches the other filtration stages.
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OtherBulk Reef Supply
The Mr. Chili 42 Piece Puzzle is a full-color 12" x 9" jigsaw puzzle depicting an underwater scene of Mr. Chili with coral and fish. It is designed to help children develop memory, critical thinking, and fine motor skills.
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OtherBulk Reef Supply
A Bulk Reef Supply graphic t-shirt featuring Mr. Chili, the BRS mascot, with a coral fragging "Frag It" theme. A lifestyle apparel item for reef aquarium hobbyists.
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OtherBulk Reef Supply
Mr. Chili Kids Stickers is a fun 6x4 inch glossy sticker sheet featuring 16 vibrant aquatic-themed stickers. Perfect for reward charts, craft projects, or sparking creativity in every aquarist in training.
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OtherBulk Reef Supply
The Mr. Chili Plush is a 7-inch stuffed mascot version of Bulk Reef Supply's Mr. Chili character. It is a novelty gift item for reef aquarium hobbyists, kids, and office or tank room decor.
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OtherAvidAqua
The AvidAqua MTO Magnetic Tubing Organizer keeps dosing and testing lines neat and secure, holding up to seven tubes (five 1/4 inch and two 3/8 inch) on glass or acrylic up to 1/2 inch thick. Its rust-proof double-sealed ModMag magnet and patent-pending Slide-Loc system lock tubing in place without thumbscrews, and it includes two guide tubes for automated testing system pickup lines.
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OtherTunze
Set of four clamping tube holders for Tunze Osmolator and Osmolator nano ATO and dosing systems. Holds up to 4 tubes of 6-7 mm diameter and attaches to glass or other materials up to 22 mm thick; can be used as a joined set or separated. Tubing not included.
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OtherEHEIM
The EHEIM MultiBox is a multi-purpose container that hooks onto the aquarium or cabinet door for hands-free maintenance and aquascaping. It holds tools, plant residue, and waste, carries wet items, and its compartments serve for acclimatising new tank inhabitants or as a quarantine/treatment area.
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OtherG.A. Murdock
The Mur-lok 1/4" Female NPT x 1/4" Push Connect is an American-made RO fitting with dual EPDM O-rings for a straight, leak-free fit. It is constructed from FDA-approved polypropylene and is NSF Standard 58 certified, used in reverse osmosis systems and media reactors.
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OtherG.A. Murdock
The Mur-lok Elbow Check Valve (1/8" Male NPT x 1/4" Push Connect) only allows water to flow in one direction and is typically used on the product water output of RO membrane housings to protect against back pressure and let auto shut-off valves operate correctly.
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