he was just telling me to keep my ph at 6.0 - 6.5 and above instead of 5.5

I get so many different oppinions it hard to differentiate truth from fiction. I have had my ph at 5.5 for the past two weeks and they dont seem to be doing that great.

I had a problem with my ph too, it went down for some odd reason and I'm going to try Cannazym for a potential root rot problem.
immortal420 Reviewed by immortal420 on . Can rockwool melt!? and no, not by fire :) Acidity. The hydro shop owner said if I have a PH of 5.5 or below, my 4-inch rockwell cubes will start melting and shrinking...constricting my plants...therefore...killing them. Any truth? Rating: 5