DISCLAIMER: ReBorn is back, but it's a new blend.   It's slightly different then the older product.  The size of the shells and coral pieces is slightly smaller then the older version as to comply with ever changing CITES laws for...

Calcium reactors have evolved into several types that require different media sizes. Because of this we now offer ARM™ Coarse for rapid upflow type reactors that have become so popular. This coarse grade of ARM™ will prevent the clogging and...

This product has forever changed the introduction of CO2 into an aquarium.  Used for CO2 injection for a freshwater planted aquarium, or a Calcium reactor in a saltwater application. We guarantee that nowhere on this planet can you find a...

Calcium reactors have evolved into several types that require different media sizes. Because of this we now offer ARM™ Coarse for rapid upflow type reactors that have become so popular. This coarse grade of ARM™ will prevent the clogging and...

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...

CarbonDoser CO2 Resistant 10' Polyurethane Tubing

DISCLAIMER: ReBorn is back, but it's a new blend.   It's slightly different then the older product.  The size of the shells and coral pieces is slightly smaller then the older version as to comply with ever changing CITES laws for...

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 replenishes calcium and carbonate alkalinity,...

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...

Reef Reactor™ is a high-purity source of aragonite, which supplies all important elements for optimal ionic balance and robust coral growth and coloration in reef aquaria. It has a grain size of approximately 0.5–1 cm (Reef Reactor™...

VarioS CR200 8 inch Calcium Reactor SKU: OCT-CALR200 Footprint: 15.2″ x 10.6″ | Body Diameter: 8″ | Height: 23″ Recirculation Pump: Reef Octopus VarioS 4 Rated for Aquariums up to 500...

Reef Reactor™ is a high-purity source of aragonite, which supplies all important elements for optimal ionic balance and robust coral growth and coloration in reef aquaria. It has a grain size of approximately 0.5–1 cm (Reef Reactor™...

VarioS CR140 5.5 inch Calcium Reactor SKU: OCT-CALR140 Footprint: 12.2″ x 9.1″ | Body Diameter: 5.5″ | Height: 23″ Recirculation Pump: Reef Octopus VarioS 2 Rated for Aquariums up to 200...

Reef Reactor™ is a high-purity source of aragonite, which supplies all important elements for optimal ionic balance and robust coral growth and coloration in reef aquaria. It has a grain size of approximately 0.5–1 cm (Reef Reactor™...

VarioS CR220 9 inch Calcium Reactor SKU: OCT-CALR220 Footprint: 16.5″ x 11″ | Body Diameter: 9″ | Height: 23″ Recirculation Pump: Reef Octopus VarioS 6 Calcium/Alkalinity...

After years of experience with CO2 systems, we discovered why consistent "bubble counts" are, most of the time, impossible. Here's why: ALL check valves, even expensive ones, have a "high crp" or "crack pressure" rating (the pressure at which they...