I dont' grow w/o it either. The trick is keeping them alive and active. There is a lot of debate on being able to adjust the PH of feedings without killing off the microherd with what you use to do so. PH UP and DOWN will kill it off, supposedly. Chlorine and Chloramines in tap water possibly could kill it off, although I've seen posts with growers not having an issue with chloramines ( I still dechloramine my feeding though). I use distilled white vinagar to bring my PH down with the line of thinking the vinegar is too diluted to do any real damage to the mycos, but I could be wrong.
Using organic nutes (particles) are said to bind with the chloramines and nuetralize them. Alot of organic growers (esp "super soil" users) usually don't even worry about their PH.
"My 2 cents"