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
OtherEshopps
The Eshopps 23 Hole Straight Frag Rack is a magnetic-mounted rack that holds up to 23 coral frag plugs on aquarium glass up to 3/8" thick. The 12" x 4" straight rack lets you observe, acclimate, and display frags before final placement.
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OtherRed Sea
Red Sea 24 in x 24 in (R42080) Customizable DIY Aquarium Net Cover (open box) — Keep your fish in your aquariums. Aluminum frame and components allow customizing the top around rim-mounted equipment such as lights, filters, and returns.
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OtherRed Sea
The Red Sea 25cm Slide-Out Control Panel mounts reef monitoring and maintenance devices (dosers, controllers) in one easy-access location inside REEFER aquarium cabinets. It measures 9.8" x 17.7" x 0.8" (25 x 45 x 2 cm), is made of marine-spec 0.8" black laminated plywood with quick-release stainless steel soft-close sliders, mounts on the left or right side, and requires a minimum cabinet internal depth of 18.1" (46 cm); it fits all REEFER cabinets except NANO models.
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OtherHanna Instruments
25-Pack HI70024P 35ppt Salinity Calibration Sachet — NIST traceable salinity calibration. Single-use sachets in light-blocking foil prevent oxidation, keeping solutions fresh.
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OtherNeptune Systems
Neptune Systems 2-Month Trident ACM Reagent Kit — Replacement reagents for the Trident Marine Water Analyzing System. Each kit comes with new bottles that place directly into the Trident's reagent holder and take only a few minutes to exchange.
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OtherNeptune Systems
Neptune Systems two-month Trident NP reagent kit covering one nitrate and one phosphate test per day for two months. Includes calibration solution, NP reagents 1, 2, 3a, 3b and waste neutralizer.
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OtherReef Nutrition
The Reef Nutrition 3 oz Value Pack TDO Chroma BOOST includes one 3 oz pouch each of TDO-C1 Extra Small granular, TDO-C2 Small granular, and TDO-EP1 Medium pellet fish foods, ideal for saltwater fish and invertebrates 1/2 inch or larger. The granulated and pelleted food is top-dressed with Haematococcus algae, providing an excellent source of astaxanthin for vibrant color and superior nutrition. It uses easily digestible fishmeal protein with no unwanted fillers or additives, comes in moisture- and oxygen-resistant foil bags, and can last up to 1 year with proper storage. Used by many marine breeders as professional hatchery feed.
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OtherFocustronic
The Focustronic 3.2 mm Luer Set (4 Pack) is a set of 4 Luer connectors for Focustronic testing devices.
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OtherHikari
Hikari 3.87 oz Marine A Pellet Fish Food is a nutritionally complete daily diet for larger marine fish with a specialized sponge-like texture that pellets become when hydrated, resembling the foods fish instinctively eat, and is readily accepted by finicky eaters. It contains seaweed meal, pure-cultured spirulina, clam extract for palatability, DHA and EPA fatty acids, and color enhancers to promote health, growth, development, and vibrant coloration. The pellets slowly sink to feed all aquarium levels, will not dissolve or cloud water, and reduce waste.
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OtherVivid Creative Aquatics
The Vivid Creative Aquatics 3/4" Random Flow Generator Flow Kit converts laminar return-pump output into varied, naturalistic flow with no moving parts, using a Flex-Series RFG nozzle and genuine Loc-Line modular hose. Recommended for 420-500 GPH per nozzle (700-900 GPH dual), it includes three adapters fitting Red Sea Reefer G2/MAX, Waterbox DN20, Innovative Marine NXT/EXT, Tideline AIO, CADE, and any 3/4" Loc-Line or 25-35mm socket fittings.
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OtherMiscellaneous
This pre-cut clear vinyl tubing is 3/8 inch ID by 1/2 inch OD and sold in 10 or 25 foot lengths. The flexible tubing is rated to 45 PSI and is used for non-pressurized applications such as reactors, air lines, and CO2 scrubber plumbing.
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OtherFiji Cube
The Fiji Cube 32 Hole Magnetic Coral Frag Rack is a slim cell-cast acrylic rack that holds up to thirty-two 0.5 inch stem frag plugs, using a Plug Locking System so snails, crabs, and current can't dislodge frags. N52 neodymium magnets sealed in acrylic mount it securely to glass or acrylic up to 1/2 inch thick.
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OtherBulk Reef Supply
BRS Citric Acid (32 oz) — Quickly and effortlessly remove coralline algae from pumps & powerheads. Use squirt bottle and brush.
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OtherMiscellaneous
The Bettix 32 oz Bottle with Dispensing Cup has two chambers, one for storing liquid and one for dispensing, with mL markings for fluid measurement; a single squeeze fills the dispensing chamber, making it an easy way to dispense two-part solution into small and medium tanks.
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OtherContinuum Aquatics
The Continuum AquaBlade 35" handheld scraper is a long-handled algae scraper for glass or acrylic aquariums (ideally 250+ gallon tanks), made of strong virgin plastic with a choice of 316 stainless steel or self-lubricating plastic blade and replaceable blades.
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OtherGiesemann
A 36-inch Bluetooth-controllable T5 lighting fixture from Giesemann with DIMTEC independent control of up to four color channels, programmed via Android device or Windows. It holds 4 or 6 39W T5 tubes with independent reflectors in an ultra-flat anodized aluminum housing; tubes are sold separately.
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OtherReef Brite
The Reef Brite 36-inch DE Metal Halide Pendant is a fanless reflector fixture for two double-ended metal halide bulbs, available in 150W and 250W versions. Its passive-cooled reflector design provides broad coverage and the shimmer typical of metal halide lighting for reef aquariums; bulbs and ballasts are sold separately.
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OtherGiesemann
The Giesemann MATRIXX II is a 36-inch T5 fluorescent fixture (4x39W) built from corrosion-resistant anodized aluminum with a gloss twin-layer powder-coat black finish, individual reflectors per tube, three independently switchable light circuits, and a German electronic ballast with flicker-free lamp start. Active and passive cooling keep lamps at optimal temperature for PAR output and bulb life; mountable with legs or a hanging kit.
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OtherNeptune Systems
Neptune Systems 24VDC 36W power supply for the FMM module and DOS fluid metering system (also compatible with Trident). Enables powered accessories like the PMUP or solenoid valve on the FMM DC24 accessory port.
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OtherSimplicity
The Simplicity 3-in-1 New Tank Rapid Test Strips (10 strips) quickly test the three key cycling parameters—ammonia, nitrate, and nitrite—for both freshwater and saltwater aquariums, with the ammonia test on a separate strip for precision.
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OtherFluval
The Fluval 3-in-1 Waste Remover and Feeder is a compact 11-inch (28 cm) hand tool for freshwater and saltwater aquariums that sucks up loose debris, flushes buildup from plants, rocks, or corals with a gentle water stream, and target-feeds fish, corals, or invertebrates with precision.
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OtherTriton
The Triton 3-Pack ICP-OES Testing Kit provides three professional laboratory water analyses of marine aquarium water. The results give a detailed breakdown of water chemistry, enabling you to understand exactly what is missing or elevated and correct it.
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OtherBulk Reef Supply
A valve for controlling water flow through aquarium plumbing. Material: PVC, EPDM; Dimensions: 2-3/8" x 2-11/16".
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OtherMilwaukee Instruments
This is a full box of 25 Milwaukee Instruments 4.01 pH calibration solution single-use packets. Milwaukee 4.01 pH calibration solution calibrates all pH meters and probes, and is typically used as the low-side reference point when calibrating probes for calcium reactors on saltwater tanks or most freshwater aquariums.
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OtherBulk Reef Supply
Black pressure-rated Schedule 40 PVC pipe sold in 46-inch lengths, with solid color and no lettering for a cleaner look than white PVC. Standard schedule 40 outside diameters fit standard fittings; available in sizes from 1/2 inch to 2 inch.
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OtherBulk Reef Supply
Blue pressure-rated Schedule 40 PVC pipe sold in 46-inch lengths, with solid color and no lettering for a cleaner look than white PVC. Standard schedule 40 outside diameters fit standard fittings; available in sizes from 1/2 inch to 2 inch.
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OtherBulk Reef Supply
Green Schedule 40 PVC pipe (46-inch lengths); solid color with no text printed on the pipe for a sharper look than white Schedule 40 PVC. Compatible with Schedule 80 fittings; available in 1/2 through 2 inch diameters.
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OtherBulk Reef Supply
Grey Schedule 40 PVC pipe (46-inch length, 2-inch diameter); solid color with no text printed on the pipe for a sharper look than white Schedule 40 PVC. Compatible with Schedule 80 fittings.
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OtherBulk Reef Supply
Schedule 80 pipe is great for high-pressure applications or where standard white PVC just won't look right. We carry Schedule 80 pipe since it is hard to find locally and it does look much nicer than standard white schedule 40 PVC.
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OtherBulk Reef Supply
This orange Schedule 40 PVC pipe is sold in 46-inch lengths with solid orange color and no printed text, giving aquarium plumbing a sharper look than white PVC. Available in 1/2, 3/4, 1, 1-1/4, 1-1/2, and 2-inch diameters, it fits standard Schedule 40 fittings and is compatible with Schedule 80 PVC (also offered in 8 colors).
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