Nature's Ocean marine gravels are made from natural aragonite with out added chemicals or dyes to disrupt your water quality. Naturally buffers to a pH of 7.8 - 8.2. Great for your saltwater, reef or brackish tank. Not suited for freshwater tanks.
Specifications Package Size 20 LB.
Grain Size 0.1 TO 0.5 MM
Application SALTWATER ONLY
Instructions Rinsing is recommended to remove excess dust particles prior to use. Use approximately 1 1/2 lb. per gallon of water.
Warranty There is a 90 day limited warranty against defects in materials and workmanship.