Reefstock 2024

"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 ro

"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 th

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...

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...

Reborn is back to it's original size & formulation.  Large size pieces. Reborn® coarse aragonite media for calcium reactors is composed of fossil skeletons of reef building corals sustainably...

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...

Reborn is back to it's original size & formulation.  Large size pieces. Reborn® coarse aragonite media for calcium reactors is composed of fossil skeletons of reef building corals sustainably...

The ReefATO+ sensor requires the electrical conductivity levels that are typical for seawater to work properly and therefore this system will not work for freshwater systems. The ReefATO+ is an...

The Red Sea ReefCan is an Auto Top Off reservoir designed to either fit in the cabinet alongside a sump or failing that, at the side of the cabinet on the outside. It will come in two sizes, a 40...

The Red Sea ReefCan is an Auto Top Off reservoir designed to either fit in the cabinet alongside a sump or failing that, at the side of the cabinet on the outside. It will come in two sizes, a 40...

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...

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...

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...

The Turbelle® High Jet is a replacement dosing pump with safety extra low voltage 12 V DC for Osmolator® nano 3152 and Osmolator® 3155 and belongs to a new generation of centrifugal pumps with a high...

Reborn® coarse aragonite media for calcium reactors is composed of fossil skeletons of reef building corals sustainably harvested from pristine sites in the Western Pacific. When dissolved, ReBorn...

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...

This Kit was designed for current Reefer Owners.  It does not include the Magnetic ATO Sensor Mounting Bracket. The ReefATO+ is an exceptionally reliable auto top-off system that includes a highly...

Perfect for starting a new system Includes 4 Essential Test Kits Accurate in both Fresh and Saltwater About Fritz Liquid Test Kits - Master Test Kit

With the EHEIM autofeeder+ we offer you the smart version of our (basic version) autofeeder with additional functions and advantages.The EHEIM autofeeder+ is our intelligent automatic feeder with...

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...

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...

World novelty | The first magnetic-bearing Turbelle® The new Turbelle® stream 3 precisely addresses the wishes of today's aquaristics industry. It is also compact, powerful, versatile, and...

Introducing the NEW GLASS Small-In-One! This 1 Gallon Desktop Aquarium is the perfect companion for your home or office - available for Saltwater or Freshwater! Tailored towards beginners and experts...

Accurate in both Fresh and Saltwater Must-Have for Every Aquarist Essential During New Tank Setup About Fritz Liquid Test Kits - Ammonia Ammonia is one of the most important par

East to Read Instructions Essential for a Healthy Tank Accurate in both Fresh and Saltwater About Fritz Liquid Test Kits - Phosphate Excess nutrients can lead to poor water qual

The deepest & widest Plug & Play NANO system The MAX NANO G2 XL comes fully equipped with everything needed to sustain a reef aquarium, sparing you from dealing with component selection or...

Easy to Read Instructions Essential for a Healthy Tank Accurate in both Fresh and Saltwater About Fritz Liquid Test Kits - Nitrate Nitrate is considered the non-toxic end produc

With EHEIM thermocontrol+ e, we offer you the aquarium heater of the future. Intelligent and ingeniously designed.EHEIM thermocontrol+ e is our first adjustable heater with digital control via WLAN...

EHEIM reeflexUV reduces microorganisms in the water and eliminates torbidity more efficiently than ever before.  EHEIM reeflexUV is yet another typical innovation from EHEIM: due to a built-in...

East to Read Instructions Essential for a Healthy Tank Accurate in both Fresh and Saltwater About Fritz Liquid Test Kits - Alkalinity Carbonate hardness, or alkalinity (KH), is

EHEIM reeflexUV reduces microorganisms in the water and eliminates torbidity more efficiently than ever before.  EHEIM reeflexUV is yet another typical innovation from EHEIM: due to a built-in...

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...

With EHEIM thermocontrol+ e, we offer you the aquarium heater of the future. Intelligent and ingeniously designed.EHEIM thermocontrol+ e is our first adjustable heater with digital control via WLAN...

East to Read Instructions Essential for a Healthy Tank Accurate in Freshwater About Fritz Liquid Test Kits - GH General hardness (GH) is commonly overlooked in many aquariums, b

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...

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...

EHEIM reeflexUV reduces microorganisms in the water and eliminates torbidity more efficiently than ever before.  EHEIM reeflexUV is yet another typical innovation from EHEIM: due to a built-in...

EHEIM reeflexUV reduces microorganisms in the water and eliminates torbidity more efficiently than ever before.  EHEIM reeflexUV is yet another typical innovation from EHEIM: due to a built-in...

EHEIM reeflexUV reduces microorganisms in the water and eliminates torbidity more efficiently than ever before.  EHEIM reeflexUV is yet another typical innovation from EHEIM: due to a built-in...

Accurate in both Fresh and Saltwater Easy to Read Instructions Essential to Monitoring Proper Ionic Balance About Fritz Liquid Test Kits - Calcium Calcium (Ca2+) is vital to man