Are you just being a cunt, or are you just too stupid from banging your head off the wall for too long? My question is valid. Its called organic agriculture. PH up and down kill healthy microbes that stabilize the soil. I could also make a compost tea but its a lot of work and the buffer in the soil isn't going to compensate that much.
compost teas aren't a lot of work man.
I'd recommend a different media to grow in, if you truly want to go organic, but testing the ph after you add nutrients is a fools errand, 95% of organic nutrients create acidic conditions. Temporarily.
you want to build a soil that promotes more of a neutral ph, concentrating on various liming amendments, like crab or shrimp meal, oyster shells and oyster flour, using more compost base as opposed to the acidic nature of peat, etc.
what I would do is assemble a soil on your own, all the information is here, and on many other grow sites. Make the soil now, and by the time you are ready for the next run it'll be cycled and ready.