Added a second small humidifier and watering with 50:50 RO water. Been flushing/ straight water for a week and growth/plant health has improved dramatically.
Going to grab some distilled water to check my medium ph then flower these plants.
I believe that by adding so much acid to my tap water to bring my ph down to 6.0, and because of the low humidity/ required watering fequency, the Dolomitic lime in my 3gal pots of promix has been used up.
If my medium ph tests back up my therory then I will go back to watering with 100% (non-ph'ed) tap water which should bring my ph back up.
How long should the lime in promix HP last under normal watering conditions?
I have to water mine every second day to keep them from drying out.
I was ph'ing down to 5.5 but it was taking a ton of acid to get it down there so i switched to straight ro for a bit then to 50:50 RO:Tap water (VERY high bicarb leels 380+ CACo3)
I figured that this would reduce my bicarb levels down to half of what they are in my tap water and it would be good and it has been.
I just think that in the process i have leached out/ neutralized all the dolomitic lime and the ph is now dropping. We shall see.. haha
