That's very interesting. Thanks.
I've kept moms in pots way too long as well but in the past have always used a humus + perlite medium that is more pH stable than promix over time. I just went to promix myself (easier to find in winter around here) and am just WAITING for the inevitable pH drift to become noticeable. I'm trying to limit residence time in each pot to 6 weeks max now.
stinkyattic Reviewed by stinkyattic on . Raising PH Hi All I'm am using Fox Farm Nutrients at 1/2 their recommended dosage. I have no problems with the PH until I add the Open Sesame. This tend to turn the whole mix in to straight up ACID. PH 4.0 or Lower. I am using a General Hydroponics test kit, and am having to use a large amount of PH up to get it to 6.0 or better. The PH up contains potassium carbonate and potassium silicate. Should I use some dolomite or something ,to up the ph instead of overdosing the potassium? Rating: 5