"By the Pound" means you are choosing the weight of your rock.  Ex: Qty 5  is 5 Pounds of Rock, NOT 5 Rocks. Selling individual rocks is impossible due to the fact that every rock is unique in size/shape/weight.   Base Dry Rock - 20...

Acclimating fish and coral gives your new arrivals and fin up for living in your tank. Drip acclimating is less intensive on you and easier on the fish. This simple, yet effective drip acclimator is used around our office and by Mr. Saltwater Tank. 

We are pleased to announce our NEW HI98319 waterproof salinity and temperature tester! Waterproof and floats! Includes 4x of the Salinity Calibration Fluid Packets. Automatic Calibration – A 35.00 ppt solution is used for calibration and...

A too high nitrate concentration can result in unwanted algae-growth and these might irritate corals in their neighborhood. Nitrate as such also retards coral growth. The nitrate concentration in a proper functioning reef aquarium should...

Easily mount your AI Prime® on your rimmed or rimless tank with the adjustable Prime Tank Mount. The innovative ball joint makes it simple to tilt and turn your Prime to get the optimal light for your corals. Made of high-quality brushed aluminum it...

It is designed for testing the concentration of salt water and brine and used for quality control in research and clinical laboratories and marine industry. Its scale provides a direct reading of the specific gravity and concentration (part per Thousand)...

Acclimating fish and coral gives your new arrivals and fin up for living in your tank. Drip acclimating is less intensive on you and easier on the fish. This simple, yet effective drip acclimator is used around our office and by Mr. Saltwater Tank...

The New AI Prime 16HD shares the same cluster as the Hydra 32HD and Hydra 64HD. The Prime 16HD incorporates 16 LEDs (+1 Moonlight) and an all new TIR optic.  What's New: • More LEDs• More PAR• More Spread• Improved Optic...

Easily mount your AI Prime® on your rimmed or rimless tank with the adjustable Prime Arm Mount. Available in 12" and 18" inch lengths.

Customizable DIY Aquarium Net Cover COMES UNASSEMBLED IN A TUBE - YOU MUST CUT AND BUILD THIS YOURSELF   Keep your finny friends safe inside your tank with a customizable Red Sea Aquarium Net Cover. With a sleek profile and minimalist...

With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is...

JW Pet Company Smart temp Thermometer Aquarium Accessory Large : JW Fusion Smart Temp Thermometer features a unique magnetic system that securely holds the thermometer in place inside of the aquarium with a magnet on the outside of the glass. It ranges...

Fritz ProAquatics Reef Pro Mix (RPM) is manufactured using only the highest quality raw materials. Formulated by researchers and marine scientists, RPM contains all of the necessary major and minor elements of natural sea water that are utilized by...

Easily mount your AI Prime® on your rimmed or rimless tank with the adjustable Prime Arm Mount. Available in 12" and 18" inch lengths.

For Fresh and Saltwater Ammonia and ammonium are substances which should be converted rapidly into nitrite followed by nitrate and nitrogen gas.If this does not happen then the aquarium is not fully cycled or biological processes are not proceeding as...

This bottle of reagent grade ammonium chloride is for use when fishless cycling. Concentration is 50 mg/L of total ammonia-nitrogen (TAN). Dose 4 drops per gallon of aquarium water.  Use with One and Only Nitrifying Bacteria. Simple, easy to...

The Flex 32.5 US Gal. (123 L) makes an exciting addition to Fluval's bold curved aquarium series with a Saltwater Specific version. It comes equipped with a mobile device operated Bluetooth Marine 3.0 LED that offers total control over brilliant custom...

10.9 Gallon Starphire Ultra-Clear Nano Cube built by Waterbox.  This Nano Cube includes a Glass Overflow, 5mm thick Starphire, a return pump & self leveling mat.  Waterbox has created the ultimate rimless cube aquarium system constructed...

Inkbird Dual Temperature Controller with Dual Aquarium Probes & WIFI control.  WIFI smart controller supports both IOS & Android，WIFI supports 2.4GHz Wi-Fi router, free APP “InkbirdSmart” which is able to monitor temperature...

Features:Nitrite is a substance that is toxic to fish and invertebrates.It is a misconception that once a tank is through its cycle (first 3 or 4 weeks) that nitrite has vanished.Many nitrite test kits suffer from interference by amines (such as...

We store this in a climate controlled environment to keep it fresh - Good for 6 months at room temperature, 1 year at 50°F. Best to keep refrigerated for longest shelf life. One and Only Live Nitrifying Bacteria prevents new tank syndrome by...

We store this in a climate controlled environment to keep it fresh - Good for 6 months at room temperature, 1 year at 50°F. Best to keep refrigerated for longest shelf life. One and Only Live Nitrifying Bacteria prevents new tank syndrome by...

The New AI Prime 16HD shares the same cluster as the Hydra 32HD and Hydra 64HD. The Prime 16HD incorporates 16 LEDs (+1 Moonlight) and an all new TIR optic.  What's New: • More LEDs • More PAR • More Spread • Improved Optic...

FritzZyme 9 contains saltwater specific strains of live nitrifying bacteria proven to reduce fish loss due to toxic levels of ammonia and nitrite. Nitrifying bacteria can take weeks to naturally establish colonies in new aquariums while ammonia and...

FritzZyme 9 contains saltwater specific strains of live nitrifying bacteria proven to reduce fish loss due to toxic levels of ammonia and nitrite. Nitrifying bacteria can take weeks to naturally establish colonies in new aquariums while ammonia and...

There is simply no better, no more spectacular way to aquascape your marine or reef aquarium. These open, light shapes not only provide lots of cover and “play area” for fish, but provide nice nooks and shelf areas for inverts too. CaribSea...

** Each Cup is PHOTO Similar, but Different ** Real Reef Branch Rock is our version of the Tonga Branch rock that use to be imported from the Kingdom of Tonga for many years, before getting banned for destructive collection practices. No live rock in...

Each Arch is approximately 8" long. Fantastic shapes, incredible colors… Well check out new LifeRock™ Shapes, the latest version of CaribSea’s amazing LifeRock™ line up. Each 20 pound box comes with 4 arches! There is simply no...

The Flex 32.5 US Gal. (123 L) makes an exciting addition to Fluval's bold curved aquarium series with a Saltwater Specific version. It comes equipped with a mobile device operated Bluetooth Marine 3.0 LED that offers total control over brilliant custom...

Real Reef Rock is our standard reef building rock. It comes in a variety of sizes from 4"-12".  It is very light, porous and full of holes and crevices. It is three dimensional in shape and comes in many natural shades of purple, pink and red. It...

Special Reef Sand is a 3 mm size aragonite sand sustainably harvested from pristine sites in the Western Pacific and Caribbean. Sterilized then packaged with live BioPronto, naturally occurring beneficial microorganisms that help to purify water in...

Don't let its size fool you. Evo packs the same performance features as a tank several times its size, but is small enough to fit on any desk or counter top. A super bright 11000 K LED provides optimal conditions for healthy coral growth color and...

Acclimating fish and coral gives your new arrivals and fin up for living in your tank. Drip acclimating is less intensive on you and easier on the fish. This simple, yet effective drip acclimator is used around our office and by Mr. Saltwater Tank...

Prime® is the complete and concentrated conditioner for both fresh and saltwater. Prime® removes chlorine, chloramine and detoxifies ammonia. Prime® converts ammonia into a safe, non-toxic form that is readily removed by the tank’s...

Real Reef Branch Rock is our version of the Tonga Branch rock that use to be imported from the Kingdom of Tonga for many years, before getting banned for destructive collection practices. No live rock in the world has ever come close to the natural...

Coarse Mesh Nets are ideal for general fish handling and our Fine Mesh Nets are perfect for delicate fish handling and skimming debris. Sizes: 4", 5", 6", 8", 10" and 12". Long handle Nets: 5" and 8". All nets include a convenient net holder. Our...

Special Reef Sand is a 3 mm size aragonite sand sustainably harvested from pristine sites in the Western Pacific and Caribbean. Sterilized then packaged with live BioPronto, naturally occurring beneficial microorganisms that help to purify water in...

The Coralife Size 32 LED BioCube Aquarium features LED lighting and timer capabilities–taking it to the next level of all-inclusive aquariums. Just like older BioCubes, it has a compact and customizable filtration chamber, hinge-top canopy design,...

The Coralife NEW STYLE Size 16 LED BioCube Aquarium features LED lighting and timer capabilities–taking it to the next level of all-inclusive aquariums. Just like older BioCubes, it has a compact and customizable filtration chamber, hinge-top...

OVERVIEW:MaxPureMPRO 90-GPD 3-Stage RO System w/ Standard 90gpd RO membrane, 1um pre-filters, pressure gauge and hose adapter SpectraPure 90gpd MaxPure RO System incorporates a high-silicate removal TFC membrane, 1 micron Sediment and Carbon Block...

This bottle of reagent grade ammonium chloride is for use when fishless cycling. Concentration is 50 mg/L of total ammonia-nitrogen (TAN). Dose 4 drops per gallon of aquarium water.  Use with One and Only Nitrifying Bacteria. Simple, easy to...

There is simply no better, no more spectacular way to aquascape your marine or reef aquarium. These open, light shapes not only provide lots of cover and “play area” for fish, but provide nice nooks and shelf areas for inverts too. CaribSea...

The Coralife NEW STYLE Size 16 LED BioCube Aquarium features LED lighting and timer capabilities–taking it to the next level of all-inclusive aquariums. Just like older BioCubes, it has a compact and customizable filtration chamber, hinge-top...

Real Reef Branch Rock is our version of the Tonga Branch rock that use to be imported from the Kingdom of Tonga for many years, before getting banned for destructive collection practices. No live rock in the world has ever come close to the natural...