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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
5,380 matching items · Most used first
FilterFiji Cube
Fiji Cube felt filter sock with a plastic ring for quick replacement; 200-micron felt material, 2.75x7 inches. Traps free-floating debris; compatible with all Fiji Cube AIO tanks.
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FilterBulk Reef Supply
BRS 200-micron felt filter sock 4 x 14 in with plastic ring traps floating debris, excess food and detritus on overflows for crystal-clear water. Felt removes finer particles than mesh but clogs faster; the ring fits common sump holders.
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FilterBulk Reef Supply
BRS 200-micron felt filter sock 4 x 8 in with plastic ring traps floating debris, excess food and detritus on overflows for crystal-clear water. Felt removes finer particles than mesh but clogs faster; the ring fits common sump holders.
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OtherTunze
A self-adhesive replacement felt pad strip for the Tunze Care Magnet Long, Strong, and Strong+ magnetic aquarium glass cleaners. Made of high-quality easy-gliding felt, it fits Care Magnet models 0220.015, 0220.020, 0220.025, 0222.015, 0222.020, and 0222.025, but is not suitable for the Nano or Pico models.
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OtherBulk Reef Supply
Female pipe thread (NPT) x cam lever quick connect adapter (style A) made of glass-reinforced polypropylene with EPDM gaskets; mates with D or B couplings for easy leak-free disconnects. Available in 1/2, 3/4, and 2 inch sizes; rated 125 PSI.
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OtherBulk Reef Supply
Female pipe thread x cam lever quick connect coupling (style D) made of glass-reinforced polypropylene with stainless steel arms and EPDM gaskets; mates with A or F adapters for easy leak-free disconnects. Available in 1-1/4 and 2 inch sizes; rated 125 PSI.
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Wave GenerationFiji Cube
Fiji Cube Fiji Flow DC nano return pump with adjustable flow up to 550 GPH; digital DC controller, feed mode, ceramic shaft, and silent operation. Can be used submersible or in-line; includes barb and slip fittings.
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Substrates & AquascapingCaribSea
CaribSea Arag-Alive! Fiji Pink live reef sand (0.5-1.5 mm) containing live bacteria to help cycle new tanks faster; pink quartz specks. Available in 10 lb and 20 lb bags; ideal for sand-sifting inhabitants.
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LightsKorallen Zucht
Korallen-Zucht Fiji Purple High Output T5 Lamp; low-band spectrum bulb (under 400nm) with red and blue mix output that intensifies coral pigmentation after 2-4 weeks. Enhances pink, purple, and red coloration in hard corals; available in 39W and 54W sizes.
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FilterFiji Cube
The Fiji Cube Fiji-12 Advanced Reef Sump (2nd Gen) is a full cast acrylic sump (12.5 x 14 x 12 inches) for 10-40 gallon tanks with interchangeable floss box/sock holder, built-in heater and probe holders, dosing holes, ATO float valve holder, adjustable water level (5-12 inches), and a polycarbonate cover.
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FilterFiji Cube
The Fiji Cube Fiji-30 Advanced Reef Sump (2nd Gen) is a full cast acrylic sump with an interchangeable filter sock holder and floss tray, a built-in heater holder, probe and dosing tube holders, and a polycarbonate cover; it is 30 x 15 x 16 inches and recommended for 125-225 gallon tanks.
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FilterBulk Reef Supply
Pre-filled hot-swappable air dryer media cartridge for the BRS Jumbo Ozone Air Dryer; holds 3 lbs of media for quick, easy maintenance.
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FilterMaxspect
Maxspect filter lens kit (Grande size) for the Pastel Reef Magnifier, including an orange Sunset Boulevard lens and a yellow Gouda Cheese lens to filter blue light for color-accurate coral photos. Magnifier sold separately.
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FilterMaxspect
Maxspect filter lens kit (Standard size) for the Pastel Reef Magnifier, including an orange Sunset Boulevard lens and a yellow Gouda Cheese lens to filter blue light for color-accurate coral photos. Magnifier sold separately.
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FilterBulk Reef Supply
200-micron mesh media bags (4 x 8 inch, 2 pack) with draw strings for holding loose filter media like carbon, GFO, or any other loose media. The mesh allows flow through the media while keeping it contained; they are easily cleanable and reusable, conform to baffles and chambers, and can also be used as effective filter socks; capacity 4.25 cups / 1000 mL.
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FilterFilter Media Cup
4-inch filter media cup adapter (adapter only) that slides onto the Filter Media Cup to accommodate C-shaped or slightly larger filter sock holders. Sea foam white, BPA-free polypropylene; 3.5-inch inside diameter, 4.6-inch outside diameter.
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FilterFilter Media Cup
The Filter Media Cup Silencer (Lid Only) is a reef-safe noise-reducing lid for the 4-inch high-flow flexible filter media cup (sold separately); made in the USA from 100% virgin BPA-free polypropylene in Sea Foam White.
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FilterFilter Media Cup
The Filter Media Cup Silencer (Lid Only, Sea Foam White, 7 inch) is a reef-safe noise-reducing lid of BPA-free polypropylene for the 7-inch High Flow Flexible Filter Media Cup.
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FilterBulk Reef Supply
The BRS Filter Sock Mount is a hang-on bracket that adds mechanical filter-sock filtration to a sump without built-in sock holders. It includes adapters for both 10 cm (4 inch) and 18 cm (7 inch) filter socks plus leveling screws for easy installation and removal.
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FilterWaterbox Aquariums
The Waterbox Filter Sponge (2 pack) is a replacement filter sponge for the Waterbox Cube 10 Nano AIO and Cube 15 Peninsula Nano AIO; its porous, non-toxic structure promotes beneficial bacteria growth while trapping debris, and it should be replaced every 4-6 weeks.
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FilterWaterbox Aquariums
Replacement filter sponges for the Waterbox Cube 20 Nano AIO and Cube 25 Peninsula Nano AIO aquariums (2 per pack); the durable, non-toxic porous sponge traps debris and promotes beneficial bacteria growth, and should be replaced every 4-6 weeks.
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FilterDMFit
DMFit push-connect filter strainer with 100-mesh (150-micron) stainless screen to protect booster pumps from large sediment. Available in 1/4-inch and 3/8-inch sizes; rated to 170 psi.
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Substrates & AquascapingUltum Nature Systems
Ultum Nature Systems Controsoil, a fine black volcanic ash-based substrate (3mm granules) for freshwater planted aquariums. It provides plant nutrients, buffers pH and KH to slightly acidic levels, and requires no rinsing.
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Substrates & AquascapingUltum Nature Systems
UNS Controsoil fine brown aquarium soil made from natural soil and volcanic ash for planted tanks. Provides balanced nutrients with low ammonia release and buffers pH to around 6.8; no rinsing required.
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Climate ControlFinnex
The Finnex HMO Titanium Heater with Digital LCD Controller maintains temperatures within +/-2°F with a corrosion-resistant, virtually unbreakable titanium tube, memory that restores preset settings after power outages, and submersible mounting in any orientation; models include HMO-100 (100W, 20-30 gal), HMO-200 (200W, 60-80 gal), and HMO-300 (300W, 80-100 gal).
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Substrates & AquascapingUltum Nature Systems
Fire Stone is a natural volcanic rock with a highly porous texture, an ideal base for attaching aquatic mosses or epiphytic plants like Anubias and Bucephalandra; deep reddish-brown when dry, it darkens when wet to a glowing, rich hue reminiscent of hot embers. Its rugged form breaks down easily for intricate hardscape layouts or as a sturdy base layer under aquarium driftwood; also suitable for terrariums and paludariums. Natural product that may slightly alter water parameters. Pieces average 3-10 inches. 10- and 18-pound packs.
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OtherHikari
Hikari First Bites is a high-protein semi-floating fry food for newborn freshwater fish (livebearers and egg layers), packed with vitamins, nutrients, and amino acids to support rapid growth and disease resistance.
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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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OtherBulk Reef Supply
The BRS Fish Acclimation Bundle is a drip-acclimation kit for safely introducing new fish and corals, including the Aqua Gadget AccuDrip acclimator, an 8" JBJ fish net, and a BRS 5-gallon bucket. It slowly equalizes tank water with transport water to reduce stress on new livestock.
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OtherSan Francisco Bay Brand
San Francisco Bay Brand Fish Eggs are frozen capelin eggs in 30 individually wrapped 3.5 oz cubes, rich in protein and Omega-3 fatty acids. They are an excellent diet for finicky marine and freshwater fish, as well as a nutritious food for corals and other filter-feeding invertebrates.
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