Quote Originally Posted by subsailor View Post
Looks like diatoms to me, should be part of the cycle. Do you have any Live Rock in there as well?
I have no other rock (except for a golf-ball sized piece of live rock rubble that came as a freebie with the live sand). I was told at the time that if my sand was "live," my rock didn't have to be. What's the difference? Different critters?