Thanks again. What you wrote made sense. Im going to get some ph readings on my tap water and my soil mixture to see where this takes me. I guess i should also test the ph of the r/0 water with ferts and calmag added to it. The confusing part of the ph factor is what do i want my final end product (run-off, im guessing) to be at? 7.0 or in that range? Ive got some deciding to do i guess. Is there a link or something you can send me to end this ph confusion once and for all. I bow humbly to you. peace out
:thumbsup: