Brightwell Aquatics Calcion-P Select Size::800 gram With high levels of both

With high levels of both calcium and magnesium

Hidden rear filter compartment

5 x 1 inches

The Hel-X 13 BioMedia for the BioMaster 250

Combine that with vibration dampening technology and these filters give you quiet power to keep your tank clean

Brightwell Aquatics Calcion-P Select Size::800 gram With high levels of bothOverview High purity powdered calcium. Increases the concentration of calcium in marine aquarium water to provide corals and other reef building invertebrates with one of the most important elements required for growth. Stronger and more economical than liquid calcium solutions; created for hobbyists maintaining multiple reef aquaria. Formulated by a marine scientist. It is recommended that the calcium concentration in the aquarium be determined by