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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
SupplementationBulk Reef Supply
BRS single-head peristaltic dosing pump with a slow 1.6 mL/min flow rate, ideal for automatically dosing alkalinity solutions and other easily-precipitated additives. Features Tygon A-60 tubing, quiet operation, and no back-siphoning; requires a timer or controller for automated on/off.
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Substrates & AquascapingLifegard Aquatics
Lifegard Aquatics natural driftwood pieces vary from 8 to 15 inches and add texture, height, and depth to freshwater aquascapes or reptile terrariums. They are a natural source of tannins and a great base for tying or gluing moss and other epiphytes; each piece is unique.
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Substrates & AquascapingUltum Nature Systems
The Driftwood Stump (Extra Extra Small) is a Malaysian driftwood stump for nano-tanks and detailed foreground scaping; its dense, blocky silhouette mimics the base of an ancient submerged tree, offering stability and a thick organic feel without much vertical space. The compact stump shape is an ideal hardscape anchor with a heavy, low-profile look; the rugged, dark surface is premium substrate for attaching Moss, Anubias Nana Petite, or Bucephalandra, creating a lush green island, and a dense surface for beneficial bacteria and biofilm. Dimensions 2 to 5 inches. 1, 3, and 5 packs.
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Substrates & AquascapingUltum Nature Systems
The Driftwood Stump (Extra Small) is a Malaysian driftwood stump for nano-tanks and detailed foreground scaping; its dense, blocky silhouette mimics the base of an ancient submerged tree, offering stability and a thick organic feel without much vertical space. The compact stump shape is an ideal hardscape anchor with a heavy, low-profile look; the rugged, dark surface is premium substrate for attaching Moss, Anubias Nana Petite, or Bucephalandra, creating a lush green island, and a dense surface for beneficial bacteria and biofilm. Dimensions 3 to 6 inches. 1, 3, and 5 packs.
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Substrates & AquascapingUltum Nature Systems
Driftwood Tree Branches are twisted, weathered wood clusters for building an underwater forest or full-on canopy scene in an aquascape; wrap the tips in moss or tiny epiphytes to create miniature aquatic trees, adding depth, scale, and a tiny forest vibe. The clusters are perfect scaffolding for Christmas, Java, or Flame moss, and the dense network of tiny branches provides a jungle gym for shrimp, fry, and small nano-fish. Sizes Small 4-6 inches, Medium 7-12 inches, and Large 12-18 inches.
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SupplementationAquaReady
The AquaReady DTH-1 Magnetic Dosing Tube Holder holds up to five dosing lines (3/16-inch flexible tubing or 1/4-inch RO tubing) with magnetic mounting for glass up to 1/2 in, includes 1/4-inch lock fittings, barbed fittings, and nuts.
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OtherAdaptive Reef
Adaptive Reef premade manifold that diverts flow from 1-inch PVC plumbing to two 1/2-inch outlets, each with its own true union ball valve for individual flow control. Unions at all connection points for easy disconnection and maintenance.
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FilterUltum Nature Systems
Pack of three highly porous biological filter media blocks designed for UNS Dual All-In-One aquariums. Angular cutouts promote water flow; two blocks fit side by side in UNS Media Tower trays.
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FilterUltum Nature Systems
These replacement UNS Dual AIO 3D Honeycomb filter socks come in a 2-pack of 200-micron mesh socks that capture uneaten food, fish waste, and floating particles in UNS Dual AIO aquariums. They require the UNS Dual AIO Filter Sock Conversion Kit and make quick swaps easy for cleaner, clearer water.
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FilterUltum Nature Systems
Replacement 2-pack of 100-micron nylon mesh filter socks for the Ultum Nature Systems Dual AIO Filter Sock Conversion Kit. They capture uneaten food, fish waste and floating particles to support cleaner, clearer water, and can be cleaned and reused.
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FilterUltum Nature Systems
The Ultum Nature Systems Dual AIO Filter Sock Conversion Kit adds fine mechanical filtration to the rear chamber of any UNS Dual All-In-One aquarium. The included acrylic conversion plate and 200-micron 3D Honeycomb mesh filter sock capture floating debris and uneaten food before they break down, improving water clarity.
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OtherUltum Nature Systems
The UNS Dual AIO Intake Guard is a slot-reducing barrier designed for all sizes of Ultum Nature Systems Dual AIO aquariums, keeping small fish, shrimp, and other livestock out of the rear filtration chambers while maintaining water flow and surface skimming.
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FilterBulk Reef Supply
Metal dual mounting bracket for standard 10-inch filter canisters; 9.25x6x2 inches.
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FilterBulk Reef Supply
Dual DI canister assembly with 1/4-inch ports and two refillable cartridges pre-filled with color-changing mixed-bed DI resin. For adding DI stages to an RO system; includes 5 feet of tubing.
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FilterBulk Reef Supply
Dual deionization add-on kit for RO systems with two pre-packed color-changing DI cartridges and an HM Digital DM-1 Dual TDS meter preinstalled. Includes 5 feet of RO tubing and 1/4-inch push-connect fittings.
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FilterBulk Reef Supply
Dual DI add-on canister kit with an HM Digital DM-1 Dual Inline TDS Meter preinstalled, designed to eliminate phosphate, silica, and CO2 from RO water. Includes canister assembly, 5 feet of tubing, and 1/4-inch fittings; DI resin sold separately.
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FilterHM Digital
HM Digital DM-1 dual inline TDS meter that monitors water quality at two points in an RO/DI system. Includes two 1/4-inch quick-connect tees; comes factory calibrated and reads 0-999 ppm.
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OtherJBJ
JBJ dual optical sensor auto top-off system with a sensor guard to prevent false readings from inhabitants or surface agitation. Includes DC pump (74 GPH, 7.2 ft max head), 7 feet of tubing, mounting bracket, and power supply; overflow timer safety feature.
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Climate ControlD-D The Aquarium Solution
The D-D Dual Digital Temperature Controller (TC125) provides precise plug-and-play aquarium temperature control, heating and cooling simultaneously via a double mains socket (up to 1600W heater, 600W chiller). It features a backlit blue LCD, waterproof plastic-coated 2m temperature sensor with suction cup, ±1°C accuracy, 0.1°C resolution, audible and visual alarms, and power-off memory.
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OtherXP Aqua
A compact plug-and-play auto top-off system from XP Aqua that uses a tiny dual optical sensor pack to keep aquarium water level constant as evaporation occurs. Its controller uses intelligent QST programming with two layers of overfill protection, and the complete kit includes the controller, a 74 GPH DC pump with 8.2 ft max head, power supply, siphon break, and 7 feet of tubing.
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OtherBulk Reef Supply
BRS Dulse Seaweed is dried 100% Palmaria palmata red algae, a protein-rich grazing food for herbivorous marine fish that supports health and coloration.
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FilterBulk Reef Supply
The BRS DUO Jumbo CO2 Scrubber holds two refillable cartridges of CO2 absorbent media (not included) and connects to the protein skimmer's venturi to strip excess CO2 and raise aquarium pH. It includes tubing, fittings, a ball valve, and a 1-year warranty.
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OtherSeachem
The Seachem DuoPad is a non-scratch, dual-surface algae pad safe for glass and acrylic. Its melamine foam side uses micro-abrasive technology to remove algae from tank walls, while the durable scrubbing side tackles tougher deposits on rocks and uneven surfaces; it is chemically inert with no soaps or detergents.
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OtherDuPont
DuPont Molykote 111 silicone o-ring lubricant for RO canisters, reactors, and pumps. Prevents o-rings from binding and provides a tight seal.
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Wave GenerationJebao
The Jebao DXP-3500 is a circulation pump with upright design for aquariums with limited space; bottom water suction maintains a low water level while minimizing air intake. Bluetooth wireless connectivity, control via mobile app and included LCD controller, ultra-quiet sine wave operation, automatic impeller-blockage detection, and dry-running protection; DC24V, 35W, 3500 LPH (925 GPH), max head 2 m; for saltwater and freshwater.
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FilterDymax
Dymax Clear Mix is a premium macro-porous synthetic polymer adsorbent engineered to eliminate cloudy water, stubborn organic waste, and dark tannin discoloration from aquariums; it polishes water to absolute clarity without stripping essential trace elements. Selective adsorption captures 5x higher capacity of nitrogenous organic waste than standard media; regenerable and reusable via a household bleach soak. Available in 100ml and 1 Liter sizes. Freshwater and marine safe.
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SupplementationDymax
The Dymax CO2 Drop Checker is an essential tool for monitoring dissolved CO2 levels in an aquarium; filled halfway with CO2 indicator solution and placed in the tank, it shows blue when CO2 is too low, green when concentration is good, and yellow when too high, reacting over 1-2 hours. More reliable than bubble counts alone, since too little CO2 promotes algae and poor plant growth while too much harms livestock. Available as drop checker only or as a kit with indicator solution, in Small and Large sizes; includes suction cup.
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Climate ControlDymax
The Dymax Cooling Fan - Vortex controls aquarium water temperature during warmer months; it clamps to the aquarium edge and blows air across the water surface to reduce water temperature by evaporative cooling, with airflow directed by an adjustable flexible arm. Budget-friendly alternative to a chiller that reduces water temperature 2-4 degrees C from room temperature with reduced power consumption. Available in two sizes, Vortex W-5 and W-8.
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FilterDymax
The Dymax eZ Filter is a high-performance internal aquarium filter system delivering complete 3-stage filtration for freshwater and marine environments; modular compartments loaded with white wool (mechanical), activated carbon (chemical), and a biological sponge (biological) for crystal-clear water. Dual-level intake draws from the upper surface and lower depths; integrates directly with the Dymax IQ Skimmer for saltwater reef setups. Models EF-20 (27 gallons, 132 GPH), EF-30 (40 gallons, 158 GPH), and EF-40 (53 gallons, 158 GPH).
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OtherDymax
The Dymax Feeding Tray is a floating feeding ring that keeps food from flowing away into the filtration system; it floats on the surface, creating a barrier that traps floating fish food such as pellets and flakes for controlled food dispersal. In time, fish and invertebrates learn where to expect food, leading to a stronger feeding response and less wasted food. Suitable for freshwater and saltwater aquariums. Available in Regular (2.75 x 2 in) and Large (4.75 x 3.13 in) sizes.
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