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...

The PhosBan Reactor 150 is designed with the upflow principle to achieve the most efficient use of PhosBan® or other chemical filter media. By pushing water from the bottom upward through a dispersion plate, it forces an even distribution of water...

On average 1-2 polyps 3/4" - 1" in size.  Coral pictured is an example of what will be sent to you. If you are looking to start buying coral online to add to your reef or fish tank, this is the best beginner LPS coral. Duncan coral is similar to a...

Mount your power supplies out of the water and out of the way. Fully adjustable and velcro secure, take your aquarium under the tank organization to the next level.

These industrial series PVC Schedule 80 valves are the best on the market.  Cepex offers a complete range of ball valves in PVC-U and PVC-C (both manual and automatic), featuring the “Antiblock” system which prevents ball jamming...

Reef Master Test Kit - To maintain and grow healthy corals, the correct balance of calcium and carbonates is essential, as are low levels of phosphate and nitrate.  This kit provides highly accurate testing for each of these critical...

Reduce Nitrates and eliminate Algae problems with Solid Carbon Dosing. Pure PHA Bio Pellet Pearls! N+P reducing algae prevention. Metabolix is the original supplier of genuine pure Biopellets tested and created for the aquarium market. Real Pearl shaped...

The Syncra Silent is new range of energy efficient pumps that is absolutely silent. Don't be fooled - these pumps are powerful and versatile. Ideal for fresh and salt water aquariums, protein skimmers, indoor fountains, water-cooling and all submersible...

Calcium reactors have evolved into several types that require different media sizes. Because of this we now offer ARM™ Coarse for rapid upflow type reactors that have become so popular. This coarse grade of ARM™ will prevent the clogging and...

The standard aquarium is made with care to ensure that it can stand up to almost any application. These aquariums come in a wide range of sizes with black trim. Large aquariums feature one-piece center-braced frames that eliminate glass bowing. Aquariums...

Redesigned optics provide an even light distribution that blankets your aquarium with up to 48” of coverage. This uniform coverage minimizes hot spots and creates an effect similar to that of a metal halide / T5 combo...

The "Care Magnet" is a breath of fresh air in the field of aquarium pane cleaner design, consisting of an ergonomic handle and special plastic blades made of wear-resistant high performance plastic. The patented slim Care Magnet is significantly more...

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...

We ONLY Ship Maricultured Live Rock on Tuesdays for Wednesday delivery.  That means if you order Wednesday - Monday, all orders will ship on the following Tuesday. Pricing includes Fedex Priority Overnight Shipping - Rock this nice...

Red/Yellow Tubes - 4 x 3m (10')

Enriched L-Type Brachionus plicatilis rotifers. Highly nutritious plankton feed consisting of five million, fully intact Brachionus plicatilis marine rotifers with millions of eggs per 6 oz bottle. Excellent food...

Phyto-Feast® Live has the same algae as Phyto-Feast but is handled with special care, being harvested and shipped fresh each week, maximizing short-term cell viability. A blend of the 5 marine microalgae most commonly used by universities and...

5 US Gallons - High-density polyethylene construction withstands temperatures up to 180°F.

Oceans Wonders Large 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 1-1/8"" crown with a 7/16" base and fit perfectly...

The "Care Magnet" is a breath of fresh air in the field of aquarium pane cleaner design, consisting of an ergonomic handle and special plastic blades made of wear-resistant high performance plastic. The patented slim Care Magnet is significantly more...

The name Peppermint Shrimp applies to a variety of Lysmata species that are distributed along the Eastern Seaboard, Gulf of Mexico and the Caribbean. This attractive shrimp is named for the red stripes running the length of its transparent to...

The Deluxe Water Change Kit Includes: 1x - 5 Gallon Orange High Density Polyethylene Bucket ($5.00) 1x - Hanna Salinity & Temp Checker ($69.00) 1x - Sicce Syncra Multi 800 Pump ($34.71) 1x - 10' Foot EHEIM 12/16 Hose ($11.49) 2x - Black Hose...

100% Non-Toxic - Triton ICP Tested  Now offered in Natural and Coralline! Have you ever wondered how they make those remarkable aquascape structures? MarcoRocks E-Marco-400 Aquascaping Kit is how! The kit includes everything you will need to...

Purigen® is a premium synthetic adsorbent that is unlike any other filtration product. It is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer that removes soluble and insoluble impurities from water at a rate...

Includes A80 LED and Gooseneck Mount. Innovative heat dissipation allows for fanless, low maintenance, shell-shaped design. Advanced optics create smooth color mixing and a beautiful shimmer.Dense Matrix LED ArrayOur unique, efficient Dense Matrix LED...

ARCTI-PODS are a Refrigerated Food.  These are not LIVE Copepods.  This is a fish food.  Do not dump the entire container into your aquarium, you will nuke it.   Arcti-Pods® are large, nutrition-packed planktonic copepods...

Now Includes a Prepaid USPS First Class Shipping Label + Testing is Now Done in the USA! The results of this test provide you with the most detailed analysis of marine aquarium water you've ever seen, enabling you to understand exactly what's missing,...

No strips, no tests, just constant readings. Now Ammonia Alert and pH Alert come together! Ammonia Alert and pH Alert employ Seachem Sensor Technology; a sensor changes color reversibly to alert you to shifts in ammonia levels and shifts in pH...

1 US Gallon - High-density polyethylene construction withstands temperatures up to 180°F.

The eFlux™ wave pump manifold HUB allows you to connect up to 3 eFlux™ wave pumps and control using the LOOP® IC Controller. Communications LED indicator provides networking status and four micro USB ports provide plenty of expansion for...

Calcium hydroxide is used to prepare limewater (kalkwasser) solutions that will maintain calcium concentrations at natural seawater levels. Kalkwasser solutions maintain calcium directly and carbonate alkalinity indirectly. However, its capacity to...

This is the Original Gen 1 Orbit Marine LED Now with LOOP Control.  Perfect for Fish Only Aquariums and Soft Corals. Right from the start, there’s a lot to love about the Orbit Marine. It’s simple, yet fully controllable. Thin and...

Icecap Reef Sump Felt Filter Bag with Plastic Ring Filter bags are used as a effective first stage of an aquariums filtration process and should be placed so that water coming from the tank filters into the filter sock first removing uneaten food,...

FREE ON ORDERS OF $2000 or MORE! The Basic Water Change Kit Includes: 1x - 5 Gallon Orange High Density Polyethylene Bucket ($5.00) 1x - Generic Refractometer ($24.95) 1x - JW Themometer ($5.95) 1x - Sicce Syncra Mulit 800 Pump ($31.47) 1x - 10'...

Optimal food source and Color Enhancer for Damselfish, small Angelfish, Sponge Feeders, and other Marine Fish with softer mouth parts. Red Marine algae is a nutritious supplement for all grazing fish, rich in vitamin C, and is 100% digestible. Feeding...

On average 1-2 polyps 3/4" - 1" in size.  On average 3-4 polyps 1” - 2” in size.  Coral pictured is an example of what will be sent to you. If you are looking to start buying coral online to add to your reef or fish tank, this...

Synthetic ferric oxide hydroxide granules with an extremely high capacity for adsorbing phosphate from saltwater and freshwater. Also adsorbs silicate, and does not release adsorbed substances. Recommended by Julian Sprung for long-lasting and easy...

Sally Lightfoot crabs are brightly-colored coastal scavengers, found in the Galapagos Islands and across the western coast of South and Central America. They have an extremely generalist diet, feeding on anything from sea lion placenta to other...

Icecap Reef Sump Felt Filter Bag with Plastic Ring Filter bags are used as a effective first stage of an aquariums filtration process and should be placed so that water coming from the tank filters into the filter sock first removing uneaten food,...

The ReefRun Dual Controller offers great value as it can run both the REEFER DC Skimmer & ReefRun DC Pump (or two ReefRun DC Pumps) at the same time!  The controller is sold separately, enabling the hobbyists to purchase one controller for...