San Francisco Bay Brand brine shrimp egg vial is designed for baby fish and reef tanks. It is highly notorious and excellent for fish and reefs. Brine shrimp contain beta carotene a natural color enhancer, high levels of lipids and essential unsaturated...

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Potassium macro element seawater supplement. Potassium is an important element that naturally occurs in seawater. Beneficial for SPS coral colour and bacterial environment.  When used in conjunction with TRITON Lab ICP testing aquarists are now...

The Reef Compact 10000 is a powerful pump in a small, quiet package. This pump has a max head of 13 feet, can push 2640 gph, and is still only 4.25 inches in diameter & 9.7 inches tall. A ton of innovation went into making this beast. A base feed...

The Reef Compact 5000 is powerful and quiet; a submersible aquarium pump with a myriad of innovative design features. A base feed allows the pump to function in shallow water and makes it an excellent water change pump, capable of leaving very little...

The Reef Compact 2500 is a very quiet, submersible aquarium pump with some innovative design. It features a base feed which allows the pump to function in low water conditions and makes it an excellent transfer / water change pump, capable of leaving...

The Reef Compact 1500 is a quiet running, submersible and small aquarium pump at just over 5.5 inches tall. While the 1500 can push 396 gph, it also offers ten different speed settings so you can fine tune flow to your own needs. Its thoughtful design...

The Reef Compact 500 is a diminutive, 4.5-inch-tall submersible pump for both marine and freshwater aquariums. It’s well thought through design features a base feed which allows the pump to continue to function in low water situations and makes...

The Reef Compact 350 is a tiny submersible pump that could be used in either fresh or saltwater. It is well suited for any aquarium that is tight on space. This space saving compact pump sits vertically and draws water from the base. The RC350 will...

The Reef Flow 2.0 2000 Nano shares the same tiny profile as the 1000, at about 1.5 inches thick but is stronger, offering a diffuse 528gph. Even though it draws more power than the 1000, it's still a showcase for super-efficient, cool running, DC...

The Reef Flow 2.0 1000 Nano is the smallest high flow water circulation pump in the line. It offers an amazing 260 gph with an internal profile just a hair over 1.5 inches thick! Its super compact design is perfect for desktop, pico, nano and jar...

The Reef Flow 2.0 4000 is a compact, high flow device for the home aquarium. Measuring only 2.2 inches thick (including the external magnet) by 1.9 inches in diameter, the 4000's svelte size doesn't seem like it could be capable of the over 1056 gph of...

The Reef Flow 2.0 16000 is the top of this line when it comes to flow; at 4226 gph it is intended to supply incredible flow to large aquariums. While it is the largest wave maker in the series, it retains a compact footprint for its power at 3.1 inches...

The Reef Flow 2.0 8000 is a serious flow machine for hobbyists that require broad swaths of turbulent current. The 8000 will push over 2113 gph of precisely controllable flow that can be adjusted via the 30-degree adjustable head, the three (included)...

The Armored Algae Bulldozer Unleash a prehistoric powerhouse on your aquarium's nuisance algae with the Fuzzy Chiton. This unique and incredibly hardy mollusk is not a snail, but a living piece of ancient biology. Featuring a distinctive shell made of...

Category: Sea Urchins Size: 1 to 3 in. (2 to 8 cm)   Depth: 0-130 ft. (0-40 m) Distribution: Caribbean, Bahamas, South Florida

The Striking & Powerful Algae Grazer Introduce a bold, prehistoric look to your aquarium with the incredible Pencil Urchin. Unlike the delicate, needle-like spines of other urchins, the Pencil Urchin boasts thick, blunt, crayon-like spines that give...

Coloration can vary - these are not always white, brown is common as well. Porcelain crabs live in abundance in Pacific Coast tide pools. They hide under stones, between mussels in mussel beds, among sponges and tucked into tufts of algae. Safely...

FREE ON ORDERS OF $250 or MORE - JUST ADD TO CART! Hailed by critics as “the world’s best reefkeeping magazine,” CORAL is written by leading aquarium experts and marine biologists, lavishly illustrated with breathtaking images, and...

BOX CRUNCHED - TEST FINE Phosphate Test Kit Accurate measurement of Phosphate in marine aquariums PO4 Red Sea’s colorimetric Phosphate test kit provides a quick and reliable measurement of Phosphate in your aquarium to an accuracy of 0...

This box is ideal for mangrove starts and freshwater plants to be able to establish their root system before planting in substrate. The slats allow for adequate flow around the mangrove roots and stalk. Held on with extremely strong N52 neodymium magnets...

This box is ideal for mangrove starts and freshwater plants to be able to establish their root system before planting in substrate. The slats allow for adequate flow around the mangrove roots and stalk. Held on with extremely strong N52 neodymium magnets...

Choose your own rack with the Modular Frag System! The PNW Modular Frag System allows the perfect placement and adjustablity for your prized frags! The base magnet and screw fit into multiple different top pieces from 1-3 frag holes to allow you to...

At only 8 inches by 6 inches, this aquarium has the ideal footprint for any small space without compromising on room for corals and inverts. The cube shape is perfect for a wide variety of creative microscapes, and the all-in-one style filtration has a...

If you have a RMS Tank Mount System, the RMS XR30 Adapter provides the necessary hardware to easily update your RMS Tank Mount for use with your new Radion XR30 LED light. Installation of the hardware only takes a few minutes and you'll be up and running...

Compatible with both G5 and G6 Radion XR30s. Multi-Light Radion Mounting System - Slide Mount The Multi-Light RMS is a modular and customizable Radion LED mounting solution for all XR15 and XR30 systems, Gen 5 and earlier. The RMS Slide Mounts connect...

UNUSED CUSTOMER RETURN See beyond a static color background and add dramatic depth where additional fades and shades make all the difference. Not only will it change the way you view your aquarium, it enhances the ambiance of any room. Fits aquariums...

Optimize Your Radion: The Right Lens Kit for Every Aquarium Ideal for Deep Aquariums or High Radion Mounting Higher PAR, Narrower Focus Compatible with G5 and G6 Radions The EcoTech Radion High Intensity Kit is a valuable accessory designed to...

Optimize Your Radion: The Right Lens Kit for Every Aquarium Ideal for Deep Aquariums or High Radion Mounting Higher PAR, Narrower Focus Compatible with G5 and G6 Radions The EcoTech Radion High Intensity Kit is a valuable accessory designed to...

Custom color from your couch. Now you can shift the color of your aquatic environment without shifting your body with the industry’s first freshwater-optimized, full spectrum RGB+White aquarium light with wireless remote control. Super bright 6500K...

Custom color from your couch. Now you can shift the color of your aquatic environment without shifting your body with the industry’s first freshwater-optimized, full spectrum RGB+White aquarium light with wireless remote control. Super bright 6500K...

Custom color from your couch. Now you can shift the color of your aquatic environment without shifting your body with the industry’s first freshwater-optimized, full spectrum RGB+White aquarium light with wireless remote control. Super bright 6500K...

Custom color from your couch. Now you can shift the color of your aquatic environment without shifting your body with the industry’s first freshwater-optimized, full spectrum RGB+White aquarium light with wireless remote control. Super bright 6500K...

River Brown molded Manzanita driftwood branches add style, color, and depth to virtually any aquarium. Molded from actual curated pieces of Manzanita wood, its flexible, dense forking branches add a lifelike piece of nature to any aquarium. Combine...

The perfect light for any Nano aquarium up to 25 gallons!  Designed for Saltwater aquariums but it will also work great with freshwater tanks.  Producing eye-popping color and amazing color rendition, dynamic color control with...

Special Reef Sand is a a coarse mix of 1-3 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...

Straightforward and safe water level controller for fresh and sea water with optical control sensor and independent thermal safety sensor. A constant water level keeps the salt concentration constant in seawater aquariums. Incl. Turbelle® High...

This 1 foot long HYDROS System Command Bus Cable allows HYDROS devices to communicate and even provide power to the Control 2 and Control 4.

This Hybrid Filter Sock allows water to flow freely while still pulling out up to 200 micron small particles.  Does a great job cleaning but won't get clogged as easily as regular socks. Long Sock - 4" Diameter x 10" Length