Mr. Brooks
MASVC Member
I use a bunch of this stuff on my tank and it works great. Tons of surface area. It basically replaces live rock at least twice its size. I think I probably paid about $160 for this amount. They are selling this on Amazon for about $48 for a pack of two blocks. My price is $40 for the lot. I already took the time to clean it and dry it out as I was thinking about adding it to my sump. Turns out I don't have room.
