Home / Marine Aquarium / Substrate / Seachem Gray Coast Seachem Gray Coast$39.95 – $65.95 Size Weight Choose an option10kg3-5kgClear Buy now SKU: 33591 Category: Substrate Tags: Aragonite, Seachem Gray Coast, Substrate For Reef Tank Product ID: 3740 Description Additional information Description Natural 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 Additional information Weight N/A Dimensions N/A Related products Refugium Miracle Mud 5LB $69.00 Buy now Out of stock Real Reef Rock-Base Rock per kg $22.00 Buy now Out of stock Seachem Meridian $39.95 – $65.95 Buy now