That's what I always thought, that limestone had phosphates. But, I'll have to keep this in mind for the next tank if people don't have any problems.<a href=showthread.php?s=&postid=11514238#post11514238 target=_blank>Originally posted</a> by reeformadness
It would help to know that this stuff is phosphate free, but it sounds like people have been pretty successful with it, so I would not be too concerned.
<a href=showthread.php?s=&postid=11517287#post11517287 target=_blank>Originally posted</a> by SurfnFish
Wow, we have almost the same exact setup minus the limestone. I have the Bak Pak also, along with 216 watts lighting. I too have the AC50 for Carbon.