<a href=showthread.php?s=&postid=11669702#post11669702 target=_blank>Originally posted</a> by twomccormicks
I have aragonite reef substrate. Looks like some very small white shells and white rocks. It was not live when I placed it in the tank. Might be why I'm just now starting to cycle. My LR was cured when I added it. Now I read that I need to take all my substrate out!!?? Are you kidding me? If that's the case I might as well start all over.![]()
The crushed corals can cause high nitrates, you don't have to switch it out, since I see that your only doing fish. Down the line though it could cause problems by all the food and fish waste getting trapped under the substrate. Better flow/filtration will help stop this from happening also.