Hey Rich, thanks again for the input on the subject.

As for dropping the distilled water, this I cannot. In my area as well as NY state, we have some real shitty water (not literally speaking ofcourse) and one factor I had to take care of was hard water burn.

I've been using RO and distilled ever since it was the factor which led to a lockout. I did grab a jug of this stuff from Grotek called CAL-MAX. It offers calcium, magnesium and iron which distilled water has relatively nothing of.

My most concern is for the cubes as well. Will rockwool melt in a ph saturation of 5.5? At present, my ph is 6.0+ so I'm not sure what direction I should take.

Thanks.
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