Thanks again...The soil pH is just over 7. Maybe 7.2. The tap water I use is 6.3, and the RO water is 7.0. The soil pH changes very little. It does look like nitrogen deficiency, its on my list of things to try. I first lowered temp, then raised lights, then use RO water to eliminated dissolved salts, now I was lowering nutrients, so maybe next batch I'll use Peters only. I'll post back, after the results.

Thanks