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.

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Water: Distilled
Nutrient: DNF Bloom A+B
Additives: DNF Bloom Fortifier, DNF Gold & DNF CARBOLOGIC
System: ebb & flow, 4-inch rockwool
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