Whats New?

Introducing the Finnex Stingray 3.0, a revolutionary leap forward in aquarium LED lighting that seamlessly combines the best features of its predecessors, the Stingray 1.0 and Stingray 2.0, to deliver an unmatched aquatic lighting experience. The...

Introducing the Finnex Stingray 3.0, a revolutionary leap forward in aquarium LED lighting that seamlessly combines the best features of its predecessors, the Stingray 1.0 and Stingray 2.0, to deliver an unmatched aquatic lighting experience. The...

Introducing the Finnex Stingray 3.0, a revolutionary leap forward in aquarium LED lighting that seamlessly combines the best features of its predecessors, the Stingray 1.0 and Stingray 2.0, to deliver an unmatched aquatic lighting experience. The...

FREE ON ORDERS OF $100 OR MORE! Provide FREE cutting-edge reef-keeping information to hobbyists to encourage responsible reef-keeping and sustainability of our hobby.  Reef Hobbyist Magazine is a reef-focused magazine that teaches hobbyists of all...

Compact but mighty new aluminum 2.5 lb CO2 cylinder. The ideal tank for so many uses. It’s perfect to pour beer and beverages at home, in addition to great pouring on the go. Plus, it’s a great portable tank for light welding and...

Aquaforest Rocks are an artificial alternative to natural live rock designed from a lightweight and highly porous material that is easy to cut, arrange, and combine usingStone Fix for hassle-free aquascaping. The porous nature of AF Rocks makes them...

A fast, long-lasting gel perfect for gluing coral frags Designed for precise gluing Thick viscosity Ultra strong Toxin Free & Reef Safe Bonds in 10 seconds Directions for Use Shake before use. Apply small amount of AF Gel Fix to the...

Our Bubble Blaster skimmer pumps are a true innovation to the aquarium hobby. At the same time, most other skimmer pumps on the market are modified water pumps fitted with a modified impeller to draw and chop the air. The Bubble Blaster was designed and...

Our Bubble Blaster skimmer pumps are a true innovation to the aquarium hobby. At the same time, most other skimmer pumps on the market are modified water pumps fitted with a modified impeller to draw and chop the air. The...

The Reef Octopus Bubble Blaster skimmer pumps are the very essence of true innovation in the marine aquarium hobby. Popularly found on the Super Reef Octopus skimmer (aka SRO). Until recently, most skimmer pumps on the market were modified...

Our Bubble Blaster skimmer pumps are a true innovation to the aquarium hobby. At the same time, most other skimmer pumps on the market are modified water pumps fitted with a modified impeller to draw and chop the air. The Bubble Blaster was designed and...

Rated up to: 375gal Marine / 750gal Freshwater Dim: 5.5" x 5.5" | Body Diameter: 4"" | Height: 21.75"Great for activated carbon, Large GFO, synthetic phosphate removers and other similar medias. Advanced Hobbyist Media Filter Our professional line...

Rated up to: 250gal Marine / 500gal Freshwater Dim: 4.7" x 4.7" | Body Diameter: 3.5"" | Height: 21"Great for activated carbon, Large GFO, synthetic phosphate removers and other similar medias. Advanced Hobbyist Media Filter Our professional line...

Our Very Best In-Sump Skimmer for Aquariums up to 210 Gallons Footprint: 11.4" x 10.4" | Reaction Chamber: 6" Super Cone | Height: 20.6"Controllable Pump: Reef Octopus 24V VarioS-2S Ultimate in Control & Performance The new and innovative Reef...

Quick Overview Eliminates surface films caused by protein and organisms Improves the exchange of oxygen and penetration of light Self-floating design adjusts according to the water level Marine aquariums with no surface overflow benefit...

Surface friendly Algae Scrub Pads are safe, non-toxic and easy to use for removing line scum, unsightly algae and other deposits that form on aquarium surface. Use it on any hard surface that you don't want scratched i.e. Acrylic, Fine China, Silverware...

Surface friendly Algae Scrub Pads are safe, non-toxic and easy to use for removing line scum, unsightly algae and other deposits that form on aquarium surface. Use it on any hard surface that you don't want scratched i.e. Acrylic, Fine China, Silverware...

Besides calcium and strontium, some coral and coralline red algae also store magnesium in their skeleton. It is biochemically directly involved in the photosynthesis of algae, i.e. the conversion of carbon dioxide and light into organic compounds...

Designed with your convenience and the water clarity of your aquatic environments in mind, our UV-C Clarifier boasts a range of features that make it a must-have for aquarium enthusiasts, pond keepers, and turtle tank owners alike. Recommended Water...

Designed with your convenience and the water clarity of your aquatic environments in mind, our UV-C Clarifier boasts a range of features that make it a must-have for aquarium enthusiasts, pond keepers, and turtle tank owners alike. Recommended Water...

Designed with your convenience and the water clarity of your aquatic environments in mind, our UV-C Clarifier boasts a range of features that make it a must-have for aquarium enthusiasts, pond keepers, and turtle tank owners alike. Recommended Water...

Designed with your convenience and the water clarity of your aquatic environments in mind, our UV-C Clarifier boasts a range of features that make it a must-have for aquarium enthusiasts, pond keepers, and turtle tank owners alike. Recommended Water...

The Double Hole Frag Rack fits just about anywhere! It is perfect for adding just a bit more space to house corals without unsightly distractions. Holds plugs up to 1.5in with stems up to 0.5in. Colored racks come with silicone center lockers, and...

The Double Hole Frag Rack fits just about anywhere! It is perfect for adding just a bit more space to house corals without unsightly distractions. Holds plugs up to 1.5in with stems up to 0.5in. Colored racks come with silicone center lockers, and...

The Double Hole Frag Rack fits just about anywhere! It is perfect for adding just a bit more space to house corals without unsightly distractions. Holds plugs up to 1.5in with stems up to 0.5in. Colored racks come with silicone center lockers, and...

The Double Hole Frag Rack fits just about anywhere! It is perfect for adding just a bit more space to house corals without unsightly distractions. Holds plugs up to 1.5in with stems up to 0.5in. Colored racks come with silicone center lockers, and...

The Double Hole Frag Rack fits just about anywhere! It is perfect for adding just a bit more space to house corals without unsightly distractions. Holds plugs up to 1.5in with stems up to 0.5in. Colored racks come with silicone center lockers, and...

MarcoRocks Aquascaper's Choice consists of 3"- 6" single wafer pieces of our Shelf Rock, perfect for creating gravity-defying HNSA scapes. We recommend building on top of MR Foundation Rock. For bonding, use MR E-Marco 400 or cyanoacrylate. Consider...

MarcoRocks Aquascaper's Choice consists of 3"- 6" single wafer pieces of our Shelf Rock, perfect for creating gravity-defying HNSA scapes. We recommend building on top of MR Foundation Rock. For bonding, use MR E-Marco 400 or cyanoacrylate. Consider...

A mix of Small Shelf, Reef Saver, and Foundation Rock. Pile up to create a home for small fish and inverts or use as frag chunks for the perfect natural looking surface to mount new frags too. They also work great in mushroom or anemone boxes. These...

This is one of our most popular rock offerings. Formed naturally from ancient reef structures, we hand select and process the most premium structures in the Marco Rocks line to create the Premium Shelf Rock for your aquarium. It lends itself to that...

Not quite Reef Saver, not quite Shelf.  Quite Unique. This Hybrid MarcoRock seems to do it all.  It lends itself to be quite easy and forgiving to work with.  The shelving aspect allows for ample ridges and overhangs, which truly is the...

Add to your glue joints when bonding Marco Rocks products to create a seamless look. Made from pure powdered Marco Rocks. MR Powder packaging: 3 lb jars

New From MarcoRocksOur Coralline Colorant SprayA formula we spent almost a year perfecting, All organic, 100% reef safe, 100% fish safe.The perfect color to touch up any breakage the occurs in shipping our Coralline rock or that occurs during aquascaping...

MarcoRocks has taken the guesswork out of choosing how much of each rock type to use when planning that perfect aquarium scape. In our new "The Perfect Mix" box you'll find just the right mix of MR Coralline Foundation, MR Coralline Hybrid, and MR...

MarcoRocks has taken the guesswork out of choosing how much of each rock type to use when planning that perfect aquarium scape. In our new "The Perfect Mix" box you'll find just the right mix of MR Coralline Foundation, MR Coralline Hybrid, and MR...

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...

Description: Quiet One DC Pump 3,168 GPH, Max Head 16.4', with Controller Part No. R440723 Model DC 3168 with Controller GPH: 3168 Max Ht. Ft. 16.40 Voltage: DC 24V Watt: 105 Suction: 1.25” and 1.50" Hose...

Description: Quiet One DC Pump 2,640 GPH Max Head 14.8', with Controller Part No. R440722 Model DC 2640 with Controller GPH: 2640 Max Ht. Ft. 14.8 Voltage: DC 24V Watt: 96 Suction: 1.25” and 1.50" Hose...

Description: Quiet One DC Pump 1584 GPH, Max Head 16.4', with Controller Part No. R440721 Model DC 1584 with Controller GPH 1584 Max Ht. Ft. 16.4 Voltage: DC 24V Watt 72 Suction: 1” and 1.25" Hose ConnectionDischarge Strainer or...