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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
Wave GenerationDolphin Pumps
The Dolphin Diamond AquaSea 10500 is an external saltwater pump delivering up to 10,500 GPH with a saltwater/abrasive-handling seal, 1.5 HP motor, and quiet cool-running operation for large marine systems.
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Wave GenerationDolphin Pumps
The Dolphin Diamond AquaSea 7450 GPH (Freshwater) is a 3/4 HP external pump for large freshwater aquariums and ponds. It moves up to 7450 GPH through a 1.5-inch discharge, runs quietly and cool, and includes super seal unions and an anti-vibration pump pad.
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Wave GenerationDolphin Pumps
The Dolphin Diamond AquaSea 7450 is a 1 HP external pump delivering up to 7450 GPH with saltwater/abrasive-handling seal, precision-molded wet end, 1.5-inch super seal unions, and anti-vibration pad, with 1-year warranty and 10-year factory service guarantee.
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Wave GenerationDolphin Pumps
The Dolphin Diamond AquaSea 9250 is a freshwater-specific external pump delivering up to 9250 GPH for large freshwater aquariums and ponds. Its high-performance seal, precision-molded wet end, and custom impeller provide quiet, cool, energy-efficient flow with minimal heat transfer, and it includes 1.5-inch super seal unions and an anti-vibration pad.
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Wave GenerationDolphin Pumps
A high-flow external aquarium pump from Dolphin Pumps rated up to 9250 GPH with a 1 HP motor and saltwater abrasive-handling seal; runs quiet and cool with minimal heat transfer for large saltwater systems.
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Substrates & AquascapingAqua Natural
Aqua Natural Diamond Black Bio-Substrate (5 lbs) is a live bacteria-seeded natural substrate for freshwater aquariums that quickly cycles new tanks; its patented blend of live nitrosomonas and nitrobacter converts ammonia to nitrate, and it can be used as the primary substrate or mixed 1:4 with dry substrate.
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Substrates & AquascapingAqua Natural
Aqua Natural Diamond Black Gravel Substrate is a 1-2mm pebble fine gravel with rich black coloration that adds contrast in planted freshwater aquariums, usable as a cap layer or standalone substrate, with minimal effect on water chemistry.
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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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FilterMaxspect
The Maxspect Dice AIO 12 Gallon Filter Sock (SKU 253213, 2.75 x 10.25 inches, 105-micron rating with a thin plastic rim) is a replacement filter sock for Maxspect Dice AIO 12-gallon aquariums. It polishes water and exports unwanted nutrients; change it every few days to keep detritus from breaking down into nitrates.
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FilterEHEIM
The EHEIM diffuser for 12/16 mm connections draws in fresh air from outside to enrich the aquarium water with oxygen. It is recommended for sparsely planted aquariums or those with a high fish population, and the intake air is metered via the attached pressure regulating clamp.
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FilterEHEIM
The EHEIM diffuser for 16/22 mm connections draws in fresh air from outside to enrich the aquarium water with oxygen. It is recommended for sparsely planted aquariums or those with a high fish population, and the intake air is metered via the attached pressure regulating clamp.
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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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Water PurificationFauna Marin
Fauna Marin DINO X (500 ml) is a strong and effective solution that removes hairy or plague-type algae growth and dinoflagellates in reef tanks, treating heavy algae outbreaks (hair, bubble, Bryopsis, dino) without harming corals. It is reef safe, dosed at 5 ml per 100 L every 2 days until algae are completely eliminated, and should be dosed in the evening or 1 hour after main lighting has shut off.
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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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SupplementationBrightwell Aquatics
Brightwell Aquatics DiscusCōde is a trace and minor element supplement formulated for discus and other South American riverine fishes such as cardinal tetras, angelfishes, festivums, and uaru. It provides a unique complex of trace and minor elements in beneficial ratios to support neurological and metabolic processes, improve coloration, and replace elements lost through chemical filtration, made from ultra-high purity materials and purified water. 500 ml treats up to 2,000 US-gallons. Also suitable for freshwater community aquaria.
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Wave GenerationBulk Reef Supply
Dispensing pump that fits one-gallon jugs for dispensing 2-part solution, one ounce per pump.
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Tank & FurnitureRed Sea
Zig-zag cutout kit for Red Sea DIY aquarium screen tops, allowing clearance around cords and equipment. Includes 15mm and 40mm left/right cutouts; compatible with all Red Sea DIY screen top kits.
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Tank & FurnitureRed Sea
Set of four Red Sea hanger clips for supporting DIY aquarium screen tops over longer spans. Compatible with Red Sea aquarium screen top kits.
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Tank & FurnitureBulk Reef Supply
DIY kits for building a custom screen top for rimless aquariums, including aluminum frame sections, corners, 1/4-inch clear netting, spline and a spline roller. The netting lets about 99 percent of light through while keeping fish and critters in; available for 2 to 5 foot tanks.
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Tank & FurnitureBulk Reef Supply
BRS DIY aquarium screen top kit with 1/4 in netting for 4 ft (120 cm) rimless tanks. Clear netting passes about 99% of light while keeping fish in; includes full-length frame sections, 4 corners, netting roll, spline and roller; frame cuts with a hacksaw.
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Tank & FurnitureBulk Reef Supply
BRS DIY aquarium screen top kit with 1/4 in netting for 3 ft (90 cm) rimless tanks. Clear netting passes about 99% of light while keeping fish in; includes full-length frame sections, 4 corners, netting roll, spline and roller; frame cuts with a hacksaw.
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Tank & FurnitureBulk Reef Supply
DIY screen top kit for rimless aquariums with fine 1/8-inch clear netting that allows about 99% of light through while keeping fish and critters in. Includes frame sections, corners, netting, spline, and a spline roller; available for 2- to 5-foot tanks. Price shown for the largest size option.
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Tank & FurnitureBulk Reef Supply
BRS DIY Aquarium Screen Top Kits for Rimmed Tanks include everything needed to build a screen top for a traditional rimmed aquarium (2, 3, 4, 5, or 6 foot sizes): frame sections, extra screen corners for tanks with trim and center bracing, a roll of 1/4-inch clear netting, spline roller, and spline. The clear netting lets about 99% of light through while keeping fish and critters in; frame cuts easily with a hacksaw.
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Tank & FurnitureBulk Reef Supply
Build a screen top for your traditional rimmed aquarium on your own with one of these BRS DIY kits. Clear 1/8 inch netting lets about 99% of light through, unlike glass or acrylic, all the while keeping your fish and critters in. Rimmed kits come with more shorter frame sections and corners than rimless kits, and each kit includes frame sections, screen corners, a roll of 1/8 inch netting, a spline roller, and spline. Available for 2 to 6 foot rimmed tank sizes.
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Tank & FurnitureRed Sea
Universal cutout kit for modifying Red Sea DIY aquarium screen tops to fit around skimmers or other equipment. Includes internal and external corner adapters plus trimmable cutout profiles; compatible with all Red Sea DIY screen top kits.
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