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Conditioners, RODI systems, marine salt mixes
Plant fertilizers, liquid CO₂, reef dosing pumps, calcium & alkalinity
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In community tanks
Chosen by aquarists
5,380 matching items · Most used first
SupplementationBrightwell Aquatics
Brightwell Aquatics NeoTiger KH+/GH+ establishes mineral balance (potassium, calcium, magnesium, sodium) in purified RO/DI or soft water for freshwater neocaridina and tiger shrimp tanks, supporting osmoregulation and long-term health.
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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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Tank & FurnitureAdaptive Reef
An Adaptive Reef V2 controller board purpose-built for Neptune Systems Apex gear, with tailored cutouts for the EB832, base unit, modules, and a small tablet. It features a halo-lit and face-lit 3D logo with full RGB lighting customization, effortless wire management, and quick-release latches; Apex controller, energy bar, and tablet are sold separately.
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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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Wave GenerationAquaIllumination
The AquaIllumination Nero 3 is a compact submersible propeller powerhead delivering up to 2000 GPH of broad, gentle flow, recommended for aquariums of 5-60 gallons with glass up to 1/2 inch thick. It offers Random, Pulse, Constant, Schedule, and Feed modes via Bluetooth with the myAI or Mobius apps (plus MXM/Apex compatibility), a fish guard, and magnetic mounting with 15 degrees of adjustment; max power consumption is 20 W.
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Wave GenerationAquaIllumination
The AquaIllumination Nero 5 is a compact Bluetooth-controllable powerhead for 40-100 gallon aquariums, delivering up to 3,000 GPH of broad, gentle flow at up to 30W (2.1" x 2.8" wetside). It mounts magnetically through glass up to 0.63" thick, includes a fish guard, and offers random, pulse, constant, scheduled, and feed modes via the myAI or Mobius app (MXM-compatible for Apex control).
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Wave GenerationAquaIllumination
The Aqua Illumination Nero 7 is a compact DC propeller powerhead producing up to 4000 GPH of broad, gentle flow for aquariums from 80 to 500+ gallons, with a magnetic mount for glass up to 0.79" thick. It offers Random, Pulse, Constant, Schedule, and Feed modes controlled via Bluetooth in the myAI or Mobius apps, plus Apex compatibility through the MXM module; an included fish guard protects inhabitants, and it draws up to 40W.
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Water PurificationSeachem
A water-care product for aquarium maintenance. Brand: Seachem.
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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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FilterAquaReady
The AquaReady NF-1 Internal Nano Protein Skimmer is a magnetically mounted nano skimmer powered by a modified Sicce Syncra Nano pump, rated for 20-30 gallon saltwater aquariums with a compact 2.76 x 4.15 inch footprint.
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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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SupplementationNyos
Nyos Nitrate+ is a high-purity nitrate solution (1000 mL, no additives) that safely raises nitrate levels in reef aquariums where nitrate deficiency can starve corals. 1 mL raises nitrate by 1 ppm in a 100L (25-gallon) aquarium; pair with Nyos Phosphate+ to keep nitrate (10-20 ppm) and phosphate (0.025-0.05 ppm) in balance and deter algae growth.
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Water PurificationModern Reef
Modern Reef Nitri-Bac (150 ml) is live marine nitrifying bacteria grown on micro substrate for cycling new reef aquariums; removes toxic ammonia and nitrite 100% naturally and instantly creates biological filtration. New cycling: apply AmmoMix, then add 50 ml per 100 L; maintenance: 5 ml per 100 L weekly after water changes, when adding new fish, or after treatment.
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Water PurificationTropic Marin
Tropic Marin Nitribiotic is a combination of probiotic and nitrifying bacteria in one preparation that strengthens the immune-system defenses of fish and shrimps and improves water quality. Nitrifying bacteria efficiently start nitrification, breaking toxic ammonia down into non-toxic nitrate; the purple bacteria oxidize toxic hydrogen sulphide to non-toxic sulphur and sulphate; probiotic bacteria and yeasts positively affect health and well-being, especially when breeding. Suitable for any aquarium stock; easy-to-dose liquid; odorless. Begin with 1 mL per 100 L, then 1 mL per 200 L weekly; turn off UV, ozonizers, and skimmers before dosing, turning on again 3-4 hours later; up to double dose is safe.
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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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