Yeah dude if you're growing in soil don't fuss with pH. Calcitic/dolomitic limestone at an application rate of 1.5-2 tbsp per gallon will stabilize your pH over time.
I grow organically and I use Earth Juice and guanos (both sparingly). Earth Juice Grow makes the fertigation solution highly acidic, we're talking around pH 4. I don't add any pH up to it what-so-ever and don't have any problems. This is because of the lime, the micro-organisms in the soil, and maybe in part because I also use some Peruvian Seabird Guano, which also helps raise pH.