This is my bread and butter, i ph my water to 6.0-6.4 wih good results on red and yellow bag of promix. I use autopots with these promix bags with great success. After each grow wash the salts out of the promix and reuse it.i have been bottom feeding a few plants and the yellow and red bag both wick up just fine even without added perlite or hydroton, those just help even more. I use mega crop 1 part also in all my grows so if you have any other questions shoot away.