Hmm, just thought about something. I didn't start having pH problems until I started my bloom nutes. I'm using Green Light 12-55-6, the only stuff that Lowe's had. Could this stuff be causing the acidic soil?

I also used Green Light root stimulator when I transplanted and flushed. When I did that I achieved a pH of about 7 on the runoff. The next watering (no nutes) the pH was low again. That doesn't seem like a normal drop in pH.

Anyone have experience using these nutes?