newsalt
Active member
Well, I finally got my 180g so I can officially post in this forum. I'm setting it up next weekend but need to buy the substrate. I want to use CaribSea Seaflor Special Grade Reef Sand. I just don't know how much to get. I don't want a deep bed, just deep enough so it's as high as the black frame at the bottom of the tank, say 2" deep. Fosters and Smith has 40lb bags, but I'm unsure of how many backs to buy. Any advice?