"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. Real Reef Branch Rock is our...

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...

This substrate is different than all other live sand products on the market. Ocean Direct™ utilizes “Sea Breathe” technology, which preserves real live sand with its own original bacteria. Every breathable bag of Ocean Direct™ is...

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...

Although originally engineered for feeding the Goniopora genus, this product has been very well received in the hobby as an excellent food source for all filter feeding corals.The particle size of Reef-roids is around 150-200 microns. This is an ideal...

Marco ReefSaver is a natural rock that is harvested on land from an ancient reef system buried when the Florida land mass was formed.  Whether you are building a Saltwater fish only, a Reef tank or a Fresh water tank, and even reptile environments,...

Swing check valve assists in blocking reverse flow and to allowing forward flow.

The 1 oz Pack features 7 four gram units   What makes Polyplab's glue different? Initial use child proof protection ring Positive pressure only aluminium tubes means you get all the glue that you pay for Ability to glue underwater with out...

Compact, yet powerful, the Fluval Mini Protein Skimmer helps to remove dissolved organic compounds and other harmful substances from your aquarium before they have a chance to break down into dangerous nitrogenous waste, which can be harmful to aquarium...

The Maxspect Coral Gripper is a long reach tong grabber specifically designed for use in marine aquariums with 316L stainless steel components. Enjoy dry hands and arms as you easily gently move corals and other ornaments within the aquarium. A strong...

Oceans Wonders Ceramic Coral Frag Plugs are perfect for the propagation or fragging of hard and soft branching corals such as Acropora, Birdsnest, Montipora, Kenya Trees, Xenia, ect. They have a 3/4" crown with a 7/16" base and fit perfectly...

Nassarius snails are very active scavengers, feeding on crabs and carrion as dead fish, etc. They often burrow into marine substrates and then wait with only their siphon protruding, until they smell nearby food.  They are essential for aerating...

Compatible with A160, A360 & AP700 (TWO Required for AP700) For rimmed and rimless tanks, the new Mounting Arms are fully adjustable, compatible with A160 and A360 series, and offer better cable management. (Part# KSAGN01 Kessil Mounting Arm) *For...

Customizable DIY Aquarium Net Cover COMES UNASSEMBLED IN A TUBE - YOU MUST CUT AND BUILD THIS YOURSELF STOCK PHOTO SHOWS WHAT CAN BE DONE WITH EXTRA PARTS SOLD SEPARATELY - THIS KIT ONLY MAKES A MAX SIZE RECTANGLE LISTED   Keep your finny...

Our NEW feeding device, MagFeeder and its accessories make feeding your fishes more effective and enjoyable. MagFeeder comes with a floating feed ring that retains flakefoods, pellets, powdered invertebrate feeds, or any food you want to dose into your...

Swing check valve assists in blocking reverse flow and to allowing forward flow.

When it comes to copepods, Reef Nutrition has you covered whether you want to seed a tank, boost a population, use for feed or culture.  Pack contains 6 oz bottles of LIVE Apex-Pods, LIVE Tigger-Pods and Artci-Pods concentrate. Keep in...

This is the new reagents set with 1x Powder, 1x Liquid. These Reagents are for use with the HI783 Marine Magnesium Checker. These high-quality reagents are manufactured at the Hanna state-of-the-art facility and are clearly marked with...

This 24VDC powered, normally-closed (NC), solenoid valve has push-fit tubing input and outputs designed for standard 1/4″ tubing. The electrical connection on this solenoid valve fits the DC24 accessory ports found on the FMM, 1Link, and Energy Bar...

Complete Bioculture for Establishing Biological Filtration & Rapidly Improving Water Quality Overview Complex system of non-pathogenic aerobic and anaerobic microbes, as well as natural enzymes, specifically formulated to establish biological...

The POLY-FILTER is for filtering and purifying both fresh and salt water aquariums. It is a formulation of a special patented material bonded to a synthetic matrix. By means of a unique proprietary process, the POLY-FILTER is made impervious to salt and...

4" Filter Media Cup Our 4" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid one piece design, that holds any filter media. The round design allows the...

Reef Safe Sterilized Clean Empty Hermit/Snail Shells.  Perfect new homes for your hermits as they grow.  These are designed for aquariums/reef tanks.  No polish, no paint, completely sterile. Medium Conical - Shells 1/2" to...

NITRATE REEFER NYOS® REEFER test kits - taking measurements at the laboratory level at an attractive price Water properties as close to nature are the key for every aquarium's success. However, monitoring relevant parameters in seawater is...

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

One (1) Medium Ocellaris Clownfish The Ocellaris, or False Percula Clownfish is the most popular clownfish species in the marine aquarium hobby. It is called the False Percula because it is closely related to, and easily confused with, the Percula...

Chemiclean cleans stains from red, black, blue-green, and methane (bubble) producing cyanobacteria in marine aquariums. It is completely safe for all fish, corals, invertebrates, and nitrifying bacteria in reef systems. It’s simple, quick and easy...

ReefDose is designed and built specifically for the daily supplementing of reef aquariums.  ReefDose uses bespoke (patent-pending) single-drop-accuracy dosing heads together with an advanced controller that provides a full suite of features...

The Sicce ultra zero utility pump is scientifically designed for pumping cloudy water without a large debris content. This multi-purpose pump is ideal for solving many issues associated with domestic hydroponic and aquatic applications such as pumping...

DINO X is a very strong and effective solution which removes any hairy or plague type algae growth and dinoflagellates in Reef Tanks. It treats algae outbreaks in reef aquariums without harming any corals.T Treats heavy algae outbreas: Hair, Bubble,...

COR 20 - This pump is identical in physical size to the COR 15 but with the addition of an External power supply can push over 2000gph! All that flow for less than 100w of power and it is nearly silent. After deciding to do this larger, higher flow...

Replacement dosing pump with low voltage 3-12V DC for osmolator.Power with 4mm hose at 11V: 0.9m – 110/h, 1.4m – 80l/h, 1.8m – 58l/h, Hmax 3.6m.

Trochus snails consume film algae, hair algae, diatoms and some species of cyanobacteria. These snails are excellent for cleaning the rocks and glass of your aquarium, but tend to shy away from the sand. Trochus snails can right themselves, but like...

Customizable DIY Aquarium Net Cover COMES UNASSEMBLED IN A TUBE - YOU MUST CUT AND BUILD THIS YOURSELF STOCK PHOTO SHOWS WHAT CAN BE DONE WITH EXTRA PARTS SOLD SEPARATELY - THIS KIT ONLY MAKES A MAX SIZE RECTANGLE LISTED   Keep your finny...

Super nutritious Natural Red Seaweed. Ideal for marine herbivores such as Tangs and Surgeonfish, Moorish Idols, Parrotfish, Angelfish, large Butterflyfish, and herbivorous freshwater fishes, such as Cichlids and Goldfish. Size:   12g (0.4 oz)

AcroPower supplies amino acids that corals need to build their skeletal architecture. Like other cnidaria, corals have a special ability to uptake dissolved amino acids across their entire surface. Closed system aquariums with protein skimming and other...

REEF-SPEC Carbon Highly activated carbon for marine & reef aquariums Red Sea REEF-SPEC™ Carbon is the ultimate choice for marine & reef aquariums due to its unique technical characteristics. Red Sea REEF-SPEC™Carbon’s granule...

The Magnetic Optical Sensor replaces our optical sensor with magnet and offers an improved look, feel, and magnetic design that also lends itself to help prevent water incursion into the sensor. This sensor plugs into your FMM and, using reflected...

MarineSnow Plankton Diet is a first of its kind product that reproduces the special biogenic suspended matter found in natural seawater, including “marine snow” aggregates. A food for filter-feeding marine invertebrates that feed on...

Micron filter bags provide excellent mechanical filtration, which helps reduce the amount of ammonia-producing organic matter in your aquarium. They also help prevent larger objects such as sand, crabs, and snails from damaging pump motors. Add these...