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
OtherAquario
AQUARIO Neo U Clips are flexible, durable polycarbonate clips that organize aquarium air and CO2 tubing and prevent clogging for smooth flow. The pack includes two clips plus a rubber cord for heat-bending them to hug the tank rim; large size fits glass up to 12mm thick.
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OtherNeptune Systems
Neptune Systems conductivity calibration solution at 447 microsiemens for calibrating conductivity and salinity probes on Apex controllers. Calibrating against a known reference keeps salinity readings accurate.
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OtherNeptune Systems
A 53,000 microsiemens (53 mS) calibration solution from Neptune Systems for calibrating conductivity probes and PM2 modules used for saltwater salinity monitoring on Apex controllers. Regular calibration every 3 to 6 months keeps salinity readings reliable; a separate 447 µS solution is used for freshwater applications.
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OtherNeptune Systems
Replacement 1/2-inch BSPP to 1/2-inch slip coupler for the Neptune Systems FS-50 1/2-inch flow sensor; sold individually.
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OtherNeptune Systems
Aquarium-themed apparel. Brand: Neptune Systems.
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OtherBulk Reef Supply
A grey and navy classic trucker hat branded with the Neptune Systems shield patch. It features a breathable mesh back, precurved visor, cotton sweatband, and an adjustable snapback closure in a one-size-fits-most fit made from 60% cotton and 40% polyester.
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OtherNeptune Systems
Aquarium-themed apparel. Material: 50/25/25 poly/combed ring spun cotton/rayon.
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OtherNeptune Systems
A 1-inch PVC union fitting from Neptune Systems for aquarium plumbing. It lets sections of pipe be separated for maintenance without cutting, suited to standard return and reactor plumbing runs.
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OtherNeptune Systems
A 2-inch PVC union fitting from Neptune Systems for aquarium plumbing. Unions allow sections of pipe to be disconnected for maintenance without cutting, and this size suits larger return-pump and manifold plumbing.
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OtherOceans Wonders
Ocean Wonders NextGen 1-inch ceramic frag plugs in Hawaiian Black are sold in a 25-pack and feature an integrated glue pit that makes mounting coral frags easy. The ceramic is fully inert and dry, ready to use without curing.
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OtherOceans Wonders
A tool or supply for aquarium setup and maintenance. Color: White.
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OtherNature Dimensions
The Nature Dimensions N-Fill Smart Auto Top Off System is an affordable ATO for nano to mid-size freshwater or saltwater aquariums that automatically replaces evaporated water to keep salinity stable. It uses redundant dual float sensors, smart overfill protection with an audible alarm, and includes a controller with LED status indicators, a submersible pump, and tubing.
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OtherSustainable Aquatics
Sustainable Aquatics NipNori is dried USDA Certified Organic raw nori seaweed (Porphyra yezoensis) for grazing herbivores like tangs and rabbitfish; 40% protein by weight and rich in vitamins, minerals, amino acids, and omega-3s.
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OtherSustainable Aquatics
Sustainable Aquatics NipNori roasted nori is dried USDA Certified Organic seaweed for grazing herbivores like tangs and rabbitfish; 40% protein by weight and rich in vitamins, minerals, amino acids, and omega-3s.
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OtherHanna Instruments
The Hanna HI782 Nitrate Checker HC is a simple and accurate handheld colorimeter using the zinc reduction method to determine nitrate concentration in marine applications (range 0.0-75.0 ppm, resolution 0.1 ppm), with a digital LCD readout and one-button operation. Includes checker, sample cuvette and caps, reagents for 10 tests, Pasteur pipette, battery, and instruction manual.
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OtherNyos
A high-sensitivity colorimetric test kit from Nyos for measuring nitrate (NO3) in saltwater aquariums. It includes 40 tests with German-made reagents, a calibrated dropper, glass sample tubes, and a professional color chart with a measuring range of 1 to 160 mg/l.
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OtherSalifert
The Salifert Nitrate Test Kit gives accurate, easy-to-read nitrate results in minutes. Trusted by discerning reefers, it includes easy-to-follow instructions; typically delivers 60 tests per kit.
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OtherNT Labs
The NT Labs Nitrate Test Kit accurately measures aquarium nitrate levels using a liquid reagent method; it contains 30 freshwater tests with reagents, a test tube, and a clear color-scale chart to help maintain optimal water quality.
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OtherSalifert
The Salifert Nitrite Test Kit gives accurate, easy-to-read nitrite results in minutes. Trusted by discerning reefers, it includes easy-to-follow instructions; typically delivers 60 tests per kit.
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OtherNT Labs
The NT Labs Nitrite Test Kit accurately measures nitrite levels in freshwater aquariums using a liquid reagent method; it includes a liquid reagent, test tube, and color scale and contains 40 tests.
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OtherHanna Instruments
The Hanna HI764 Checker HC is a handheld digital colorimeter for ultra-low-range nitrite testing in marine water, reading 0 to 200 ppb with 1 ppb resolution. It bridges the gap between chemical test kits and professional instrumentation for accurate, affordable nitrite monitoring.
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OtherPython
These Python No Spill Clean & Fill extended gravel tubes (10", 20", 24", and 30" lengths with 2" diameter) replace or upgrade the standard 10" tube on the Python water-change system, making them ideal for taller aquariums. Each includes 2.5 feet of tubing and a female connector and interchanges easily with the existing system.
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OtherPython
The Python No Spill Clean and Fill Hook hooks the Python No Spill Clean and Fill water change fill tube on the edge of the aquarium so it cannot kink or slip out while the tank refills. It leaves hands free for other maintenance during refills and is constructed from American made, BPA, arsenic, and lead free materials.
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OtherPython
Python No Spill Extensions are extension hoses for the Python No Spill Clean and Fill water change system, screwing directly into the existing system with included male and female fittings for extra reach to anywhere in the house. Available in 10-foot and 20-foot lengths.
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OtherPython
The Python No Spill Clean and Fill is a faucet-driven water change system that drains and fills aquariums with no buckets or siphons: connect the gravel tube to any standard faucet (metal faucet connector with brass adapter included) and household water pressure creates a venturi effect that pulls water out of the tank and into the sink. A built-in control valve regulates flow; available in 25, 50, 75, and 100-foot hose lengths (1/2-inch ID tubing) with replacement fittings available.
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OtherBulk Reef Supply
BRS Premium Nori Sheets are dried seaweed sheets sold in a 100-pack for feeding marine herbivores such as tangs, angelfish, rabbitfish, and blennies. They provide natural vegetable matter for grazing species and are typically attached to a feeding clip for tank-side grazing.
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OtherTropic Marin
Tropic Marin NP-Bacto Pellets are a biodegradable filter media made from natural biopolymers for use in pellet reactors or fluidized bed filters, designed for the biological removal of nitrate and phosphate. They promote colonization of nitrate- and phosphate-removing bacteria; the resulting nutrient-rich biomass either feeds corals and filter feeders or is skimmed out. Start with 50 mL per 100L (26 gallons), do not exceed 200 mL per 100L, and top up monthly as the media degrades; a protein skimmer is recommended for nutrient and gas exchange.
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OtherMarcoRocks
MarcoRocks NSA Powder is an all-natural aquascaping tool for covering or reinforcing visible joints in rock work. Made from 100% pure powdered MarcoRocks, it provides a perfect color match to rockscapes built from MarcoRocks Dry Rock and can be used with any reef-safe super glue, epoxy, or mortar to form strong joints. Contents: 3 lbs of pure, powdered MarcoRocks. Made in the USA.
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OtherNT Labs
An NT Labs freshwater aquarium test kit bundle using accurate liquid drop tests for six essential water parameters: ammonia, nitrite, nitrate, pH, general hardness (GH), and carbonate hardness (KH). It provides up to 200 tests combined with color charts, instructions, and a test tube rack for routine water quality monitoring.
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OtherBulk Reef Supply
The Red Sea Reefer DC Skimmer 600 is a smart, controllable protein skimmer for marine aquariums up to 160 gallons (600 liters mixed reef), powered by a Sicce PSK DC-1200 DC pump (750 lph / 195 gph air, 1500 lph / 400 gph water, 25W). Its self-leveling technology prevents over-skimming and full-cup spillover by regulating pump intensity based on foam wetness while continuing to aerate the water; it runs quiet with vibration-absorbing connectors and an air intake silencer. Features include a foam-view window, integrated neck cleaner, drain hose barb, and quick-release body; the ReefBeat-connected ReefRun Dual Controller enables custom schedules and cup/malfunction notifications (controller sold separately).
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