GH=6 KH=3 pH=7.2 After injecting CO2 at 2.5bps the pH is 5.8 How does dropping pH affect fish? I have Harlequin Rasboras, Panda Cory's, Nerites They all seem to be acting normal. I seem to have read conflicting threads that CO2 injection is not real pH and others say it is. EDIT: Should...