I beleive my live rock is cured now. Very low nitrite levels, very clear clean water after using stress zyme. I dont have a nitrate test kit, I can tell you that lots of small bubbles have formed on the live rock. How soon do i perform a PWC
. I have a 55g tank, 65g protein skimmer, 1 double penguin biowhell, 1 70 gal
aquaclear and one 660 penguin powerhead. My substrate is live sand.