jml1149
New member
No one monitors PH, and there is a reason.
The reason your PH cant go to low is because of the aragonite sand we use. If the PH drops to low, you start to dissolve the aragonite which in turn will bring the PH back up. Anywhere between 7.5 and 8.3 is fine, and the higher end being better for coral growth.
I disagree, 7.5 is not fine:
http://www.reefkeeping.com/issues/2004-09/rhf/
If the pH is low enough to dissolve sand, its low enough to dissolve coral skeletons and snail shells. And his tank is bare bottom. We're not going to chase pH, but we need to compensate if it is in fact low. Don't worry about it, but know what it is.