Meet the Team!

We start with our ReefSaver rock with result looking something straight from the ocean.  This is not a wet or "live" product.   Our Coralline rock features no paint and no concrete.  We use an...

We are pleased to announce our NEW HI98319 waterproof salinity and temperature tester! Waterproof and floats! Includes 4x of the Salinity Calibration Fluid Packets.

"By the Pound" means you are choosing the weight of your rock. Ex: Qty 10  is 10 Pounds of Rock, NOT 10 Rocks. Selling individual rocks is impossible due to the fact that every

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...

Hanna Instruments HI97115UC Marine Master Bluetooth Multiparameter Checker Precision Testing for the Serious Reef Hobbyist Achieve unparalleled accuracy and control over your reef aquarium's water...

Introductory pricing for a limited time. Limited quantities. Pukani Dry Rock is here for the very first time since 2018!  We are proud to announce the offering of Walt Smith Fiji rock. 100% Natural...

Real Reef Rock is our standard reef building rock. It comes in a variety of sizes from 4"-12".  It is very light, porous and full of holes and crevices. It is three dimensional in shape and comes in...

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...

Monitoring the salinity, pH and temperature of the water is an important routine in the maintenance of a marine aquarium or marine aquaculture. The Hann HI981520 is an easy-to-use monitor that...

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...

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...

Introductory pricing for a limited time. Limited quantities. Pukani Dry Rock is here for the very first time since 2018!  We are proud to announce the offering of Walt Smith Fiji rock. 100% Natural...

Introductory pricing for a limited time. Limited quantities. Pukani Dry Rock is here for the very first time since 2018!  We are proud to announce the offering of Walt Smith Fiji rock. 100% Natural...

Introductory pricing for a limited time. Limited quantities. Pukani Dry Rock is here for the very first time since 2018!  We are proud to announce the offering of Walt Smith Fiji rock. 100% Natural...