6.3-6.8 is said to be ideal for soil, any and every soil. My soil however regulates itself to 7.5 and my plants don't seem to mind, happy frog. I'm always using ph down with each water and or feed, 15ml per gal. Sounds nuts I know but it's been working for me so far. At this point, I'm only checking soil ph, I don't even check water (kinda afraid to). I just drop 13-15ml of ph down per gal and that's my sweet spot. This is just what works for me and I don't recommend it but if I didn't try different ph levels, I wouldn't have found where my plants do best. Funny thing is that even with that much ph down, the soil only fluctuates down 1.0. 12 hours after watering, the ph is back up to 7.5 and will stay there until the next watering, trips me out.....but works for me....

I'd say don't sweat the ph thing too much. Try different levels and find what they respond to....

How do you check your ph? What is your ingoing water ph, soil ph and runoff ph?

CGI::::::