I am working up to a automated watering system for a DTW Hempy system. I have been keeping my nutes mixed in a 5gal bucket with a Airstone to see how long my nutes stay stable. I am on hard well water where I am. Here is what my Temp Rez dose. Nutes = FloraNova Grow/Bloom, KoolBloom, Bud Factory X, Cal/Mag. Tap PH 7.2-7.4 Add nutes Set PH in bucket to 6.0 24 hrs later PH is back to 7 +/_ Set it back to 6.0 then it creeps up over night again but to maybe 6.8 The PH rise overnight gets less over 3-5days. I have read that the issue could be my Hard water? What can I do to keep my feed more stable? Different nute company? RO filter?