Hi weedhound, thanks for your time.

The DNF Bloom formula I'm using has 2.3% calcium, and the fortifier has 0.5% magnesium. I'm going to try the CAL-MAX at half strength at first and drop my ph to about 5.5.

My ph up and down are from DNF as well, not homemade. I also use Grotek's up and down as well.

Thanks again for your assistance.
immortal420 Reviewed by immortal420 on . ph, the "correct" range I've heard alot of stuff here and there, but I can never get a definite answer for this question. What should the ph be? I've heard 5.1 - 5.8, 5.2 being optimal. Local hydro shop owner says at those ph's, rockwool actually "melts??" Is this true? He's telling me to keep it 5.8 - 6.8, aiming for 6 and 6.3 being optimal. This is my problem. Rating: 5