Tho the ph down is 100% Organic, it's a pain when using. The ph down would make the ph drop dramatically and it would take 3 minutes for it to settle again. (Which would end up being just a coupe points) but the ph would drop like 30 or 40 points each time u added and take 3 full minutes to come back up and settle. But it did do it's job and it is 100% Organic!
As for the mist. It seems to help whwn the plant is having issues drinking from roots or feeding. Quickly fixing deficiencies!