Discover aquarium tools, test kits, food and accessories and see the tanks using them.
Build your setup
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
OtherFlipper
The Flipper DeepSee Clear Max 5" Magnified Viewer is an optical-grade magnifying lens that attaches magnetically to glass or acrylic up to 3/4" (20mm) thick, providing a 5-inch viewing portal with a 3-12 inch focal range. It is ideal for close-up disease and pest checks on corals and fish as well as aquarium photography, and accepts an optional orange filter lens (sold separately).
0 showcased tanks
OtherFlipper
The Flipper DeepSee Clear 4-inch magnified viewer is an optical-grade magnifying lens providing a 4-inch viewing portal for the aquarium. Held in place by strong magnets, it is ideal for disease and pest checks or aquarium photography; safe for glass and acrylic up to 5/8 inch (16 mm) thick, with a focal range of approximately 3 to 8 inches.
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OtherFlipper
Flipper DeepSee 4-inch magnetic magnifying viewer with optical-grade glass, held by rare earth magnets (tanks up to 5/8 inch thick). Gives a closer look at corals for everyday viewing or photography; 3 to 8 inch focal range.
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OtherFlipper
The Flipper DeepSee MAX 5-inch magnified magnetic viewer is made with optical grade magnifying glass, perfect for everyday viewing or aquarium photography, with a focal range of 8-12 inches to get a closer look at corals and observe pests or early signs of disease. It is held in place by strong rare-earth magnets compatible with tanks up to 3/4 inch thick; each side has a soft felt-like surface so it moves smoothly across glass or acrylic without scratching; for saltwater, freshwater, or dry enclosures.
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OtherFlipper
The Flipper DeepSee Nano 3" is a magnetic magnifying viewer with optical-grade glass for close-up viewing or photography of corals and livestock, with a focal range of 2-6 inches. It attaches with super-strong rare earth magnets (felt-lined on both sides for safe, smooth movement) and works on glass or acrylic tanks up to 3/8 inch (10 mm) thick.
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OtherHanna Instruments
Hanna Instruments ultra-pure deionized water for diluting samples in titration tests like the Hanna Calcium Checker. Keeps test results accurate and repeatable; available in 230mL and 3.78L sizes.
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OtherBulk Reef Supply
Vertical-mount Madison float switch with mounting nut for water level control in auto top-off and other aquarium applications. Normally closed or normally open operation, 24-inch leads, 1/8-inch NPT fitting; UL, CSA, and NSF certified.
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OtherVivid Creative Aquatics
The VCA Deskmate Flow Kit (Orange) upgrades Eshopps Deskmate return lines with dual 1/4-inch Flex-Series Random Flow Generator nozzles and genuine Loc-Line parts for randomized aquarium flow.
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OtherVivid Creative Aquatics
Single 1/4-inch return line upgrade kit for Eshopps Deskmate tanks with one sunset-orange Flex-Series Random Flow Generator nozzle and genuine Loc-Line fittings. Creates randomized flow patterns; installs on the stock 16.5mm return.
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OtherTHK Diamond Tools
Diamond Coated Glass Drill Bits grind clean holes in non-tempered aquarium glass for installing bulkheads, overflows, drains, and returns; choose from six sizes (30-75 mm) matched to common ABS bulkheads, using light pressure and constant water cooling.
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OtherEHEIM
EHEIM diffuser for air pumps, which breaks the air stream into fine bubbles to oxygenate the aquarium water.
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Not specified
Digital pH meter for reef and marine aquariums, giving precise, instant pH readings to help maintain stable acidity (ideally 7.8-8.4) for coral growth and a healthy marine environment.
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OtherFlowcolour International Trade (Xiamen) Co., Ltd.
The DIN to ANSI UPVC Union connector makes aquarium plumbing maintenance effortless, connecting sections of PVC pipe in seconds without cutting or disturbing the system. It provides a secure, leak-free seal ideal for pumps, skimmers, and valves, and is designed to bridge Metric (DIN) and Standard (ANSI) plumbing.
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OtherTom's Aquatics
The Tom's Aquatics Dip & Pour Multi-Purpose Container is a clear plastic hanging container that hooks inside or outside of an aquarium or sump with up to a 1-inch rim. It isolates, acclimates, or holds fish and corals for inspection or net-free catching, and comes in regular and large sizes.
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Other3F
3F Discus Energy frozen fish food 500 g is a protein- and vitamin-enriched mix for discus needing extra energy: young discus (3-18 months), broodstock during breeding, and fish recovering from illness.
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Other3F
3F Discus Juvenile frozen fish food 500 g is formulated for discus fry 0-5 months, with extra proteins and vitamins in a fine-ground structure. Feed alongside live brine shrimp nauplii, several times daily in small amounts.
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Other3F
3F Discus Special Mix 100 g is a frozen high-protein food for discus, combining beef heart with natural products like krill, brine shrimp and mysis. Garlic is added to help prevent worm diseases.
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OtherAquahub
Build Your Own Auto Top Off System for your aquarium. Perfect for the DIY reefer who likes fun projects and wants to save a few dollars. Assembly requires only basic tools and no soldering.
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OtherAPI
API Doc Wellfish's Hand Held Algae Pad is an indestructible cleaning pad made to reach the nooks and crannies of the aquarium. It removes algae quickly and easily; for glass aquariums.
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OtherSmithsonian
The Smithsonian Dolphin Mold and Paint Kit is a kids craft kit that combines art, discovery, and learning. Kids mix and pour the casting material into dolphin molds, read the included illustrated dolphin booklet, then paint their creations and attach them to included magnets for display.
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OtherDOOA
The DOOA MAINTENANCE BRUSH (CASCADE BRUSH S) is a cleaning brush designed to clean the cascade spillway on WABI-KUSA WALL, where emerged plants grow thickly and algae and soil mud may pile up.
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OtherDOOA
The DOOA Pipe Brush Duo is a spring washer with two different brush shapes on both ends that removes algae from hard-to-reach spots inside inflow and outflow pipes. It is designed for the DOOA Stream Pipe series and also works with all ADA and Do!aqua glass inflow and outflow pipes with 10mm to 20mm diameter.
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OtherDOOA
The DOOA Scissors 105 are compact scissors specifically designed for trimming plants in paludariums and terrariums. Length 105mm; article code 156-003.
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OtherDOOA
DOOA Aqua Scissors Curve are designed specifically for trimming aquatic plants, with curved blades that make trimming foreground plants easier. Available in 170mm and 230mm lengths.
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OtherDOOA
The DOOA SOIL SCRAPER 13 is a scraper designed for cleaning algae that accumulates between the substrate and glass surface in aquariums, paludariums, or terrariums. Width 13mm; article code 156-302.
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OtherDOOA
DOOA Tweezers are simple-design tweezers for planting aquatic plants, with moderate spring and perfectly aligned blades for great usability. Available in S (175mm), M (255mm), and L (300mm).
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OtherDOOA
The DOOA Tweezers Curve are simple-design tweezers for planting aquatic plants, with moderate spring and perfectly aligned blades for great usability. Available in 170mm and 250mm lengths.
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OtherBulk Reef Supply
Dosing syringes in 1 mL, 5 mL, and 10 mL sizes for filling test vials, target feeding corals, and dispensing liquid foods, trace elements, or testing reagents. Clear graduated body with white plunger for high-contrast readings; the plunger removes for easy cleaning.
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OtherBulk Reef Supply
The BRS Double Junction Lab Grade ORP Probe is an American-made ORP probe for saltwater aquariums featuring a high-grade platinum rod and a double-junction design that resists clogging from proteins and heavy metals for a longer lifespan. It has a low-noise 10-foot cable with BNC connector and an Ultem shell for high chemical resistance.
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OtherBulk Reef Supply
Chemi-Pure Elite is a pre-bagged filter media that combines premium pelletized activated carbon, ion-exchange resins, and GFO (granular ferric oxide) to remove dissolved organics, toxins, odors, metals, phosphates, and silicates, helping stabilize pH and reduce nuisance algae; it is placed in a high-flow area of the sump or filter and typically replaced every 2-4 months.
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