Seachem Gray Coast Size:10kg corals expend less energy to

corals expend less energy to derive the nutritional benefit

Replacement Filter Socks are available

enhancing the natural feel of the aquarium

Easy-to-read display

and discourages nuisance algae

Seachem Gray Coast Size:10kg corals expend less energy toNatural calcite for all types of marine, reef, and tropical aquaria Assists in stabilizing calcium and alkalinity Helps prevent large pH declines High in magnesium Maximizes color of marine fish Overview Gray Coast Calcite is an all natural calcite substrate for all types of marine, reef and tropical aquaria. Its chemical composition will assist in stabilizing calcium and alkalinity while preventing large pH declines. Simply rinse before use to remove