ReMag is a magnesium-rich natural stone sized to blend well with ReBorn and other calcium carbonate media for use in calcium reactors. ReMag makes maintaining the magnesium level in your reef a no-brainer. Simply use ReMag in a calcium reactor according...

Safety Stop is a simple and effective way to help protect your Saltwater and Freshwater aquarium fish from serious unwanted disease outbreaks caused by external parasites, and bacterial and fungal infections. New fish are often the source of infectious...

Safety Stop is a simple and effective way to help protect your Saltwater and Freshwater aquarium fish from serious unwanted disease outbreaks caused by external parasites, and bacterial and fungal infections. New fish are often the source of infectious...

** Each Cup is PHOTO Similar, but Different ** Weight: Approximately 3-3.5 lbsSize: Approximately 8 x 8 x 2.5 inchesEach rock is unique, weight and size may vary. Real Reef Branch Rock is our version of the Tonga Branch rock that use to be imported...

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...

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...

Free-Form Coral Amino Complex for all Corals & Their Allies Overview Complex of free-form amino acids in the same ratios found within tissues of stony corals. Beneficial to all corals (stony and soft), as well as solitary and colonial polyps...

Free-Form Coral Amino Complex for all Corals & Their Allies Overview Complex of free-form amino acids in the same ratios found within tissues of stony corals. Beneficial to all corals (stony and soft), as well as solitary and colonial polyps...

Clarity™ is the ultimate clarifier for both fresh and saltwater. It employs an advanced polymeric flocculating agent that is both reef and plant safe. Clarity™ is the only clarifier on the market that does it all! Clarity™ will clear...

25 Pack of Eshopps 7" Filter Socks with Plastic Ring

25 Pack of Eshopps 4" Filter Socks with Plastic Ring

The Kessil WiFi Dongle is the simplest, most reliable wireless lighting option in the market. Used together with the best-in-class A360X, the WiFi Dongle’s small frame plugs into the fixture’s K-Link port, and gives users the ability to...

Trident Reagent Kit 6 Month Supply - With six month kits, the cost of running the Trident is less than $17 per month - that’s averages out to about 7 cents a test! Neptune Systems recommends keeping on hand no more Trident reagent than you might...

"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. Marco ReefSaver is a natural...

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,...

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,...

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,...

Filter socks are a critical component in maintaining water quality in aquariums. They remove suspended debris and detritus, which often lead to excess dissolved organics, nitrate, and phosphate when left unchecked. This makes Seachem Filter Socks an...

Filter socks are a critical component in maintaining water quality in aquariums. They remove suspended debris and detritus, which often lead to excess dissolved organics, nitrate, and phosphate when left unchecked. This makes Seachem Filter Socks an...

Filter socks are a critical component in maintaining water quality in aquariums. They remove suspended debris and detritus, which often lead to excess dissolved organics, nitrate, and phosphate when left unchecked. This makes Seachem Filter Socks an...

Filter socks are a critical component in maintaining water quality in aquariums. They remove suspended debris and detritus, which often lead to excess dissolved organics, nitrate, and phosphate when left unchecked. This makes Seachem Filter Socks an...

Attractive, Ultra Compact and Affordable Filtration The sleek and compact Reef Octopus Classic 110SSS in-sump protein skimmer supplies powerful filtration for aquariums up to 130 gallons where sump space may be limited. The Reef Octopus Classic...

With bold red color accents and a bevy of practical features, the new Reef Octopus OCTO Sump Series is perfect for discerning reef aquarium hobbyists who crave luxurious good looks with performance-inspired design. You can house all your red Reef Octopus...

With bold red color accents and a bevy of practical features, the new Reef Octopus OCTO Sump Series is perfect for discerning reef aquarium hobbyists who crave luxurious good looks with performance-inspired design. You can house all your red Reef Octopus...

With bold red color accents and a bevy of practical features, the new Reef Octopus OCTO Sump Series is perfect for discerning reef aquarium hobbyists who crave luxurious good looks with performance-inspired design. You can house all your red Reef Octopus...

XL Version Roll Length - 137 ft vs 82 ft on the original style. The ClariSea fleece filter is a high efficiency water filtration system which effectively removes suspended particles such as micro algae, detritus, food, organic waste and gravel dust from...

When power and style combine The Finnex HLC series is the slimmest series yet solidly built in a eye catching aluminum hood. Featuring a unique four bulb cluster of 8,000K Daylight, Red, Blue, and Green LEDs - the HLC series supports all types of plant...

When power and style combine The Finnex HLC series is the slimmest series yet solidly built in a eye catching aluminum hood. Featuring a unique four bulb cluster of 8,000K Daylight, Red, Blue, and Green LEDs - the HLC series supports all types of plant...

When power and style combine The Finnex HLC series is the slimmest series yet solidly built in a eye catching aluminum hood. Featuring a unique four bulb cluster of 8,000K Daylight, Red, Blue, and Green LEDs - the HLC series supports all types of plant...

When power and style combine The Finnex HLC series is the slimmest series yet solidly built in a eye catching aluminum hood. Featuring a unique four bulb cluster of 8,000K Daylight, Red, Blue, and Green LEDs - the HLC series supports all types of plant...

When power and style combine The Finnex HLC series is the slimmest series yet solidly built in a eye catching aluminum hood. Featuring a unique four bulb cluster of 8,000K Daylight, Red, Blue, and Green LEDs - the HLC series supports all types of plant...

The Finnex Stingray II Aquarium LED +Moonlights The Stingray 2 LED series features such a slim hood that it is nearly unseen atop an aquarium. The Stingray 2 offers nearly double the amount of LEDs of the original Stingray, along with offering users the...

DO NOT FIT THE NEW PRIME 16HDs Direct the Light Only Where You Need It. The ALV is the easiest way to direct the light from your AI Prime Refugium light right where you need, while shading nearby equipment such as your protein skimmer or other sump...

Helix Ships on Tuesday - Wednesday from ALGAE BARN in CO to ensure the freshest possible product as we receive weekly Monday shipments of this. Not only does Coralline Algae in a Bottle speed up the process of developing colorful coralline algal crusts...

Helix Ships on Tuesday - Wednesday from ALGAE BARN in CO to ensure the freshest possible product as we receive weekly Monday shipments of this. Not only does Coralline Algae in a Bottle speed up the process of developing colorful coralline algal crusts...

Helix Ships on Tuesday - Wednesday from ALGAE BARN in CO to ensure the freshest possible product as we receive weekly Monday shipments of this. Not only does Coralline Algae in a Bottle speed up the process of developing colorful coralline algal crusts...

Base Station Only -  The base allows the versa pumps to work together and allows them to be powered by a single power supply. The Versa is a specifically designed peristaltic pump from EcoTech Marine. The Versa is extremely precise, robust and...

The Versa is a specifically designed peristaltic pump from EcoTech Marine. The Versa is extremely precise, robust and versatile.  The Versa is capable of being used as a dosing pump, as an auto top off (ATO) pump and even for automatic water...

The Versa is a specifically designed peristaltic pump from EcoTech Marine. The Versa is extremely precise, robust and versatile.  The Versa is capable of being used as a dosing pump, as an auto top off (ATO) pump and even for automatic water...

FREE SAMPLE ON ORDERS OF $20 or MORE   TDO Chroma BOOST is a granulated and pelleted fish and coral feed "top-dressed" with Haematococcus (which provides an excellent source of astaxanthin) for vibrant color and superior nutrition.  New...