hello folks, for the last week iv bn having rapid ph changes in my 5gal buckets, because of this i have to adjust my ph 5 or 6 times daily. Last night i did a complet flush and change. i got 6gal of distilled water added my foxfarm nutes a little LESS than half strenght, and ad big bud(1st) let settle for an hour and the ph was at 2.6, then i adjusted up to 5.9. rite b4 i went to bed. wen i check them again a few hrs later they where at around 7, could this b because my nuts strenght is to low. im in my 3rd week of flowering and im having trouble keepin my ph in range.temps in my room are about 78-80 with the lights on. i can i possibly keep my ph in range for at least a day. Oh yea i dnt have an tds/ec meter. Could i use peroxide to the help my roots the look a little brown.