well I've been soaking hydroton in ph'de water for two days and so far so good. Town water and never had trouble in past. PH stays pretty darn good once set. Should have everything up and running soon. Just having second thoughts on which system to go with this time around. DWC, flood...I really liked the scrog years ago when I used it, but that is so much veg time and work!! I'll also have some pics soon! Thanks again for your valuable help!