For the lazy: "
It's been awhile since I've updated this but one of my plants is very sick currently.I have attached a picture of all 4 of my plants as of 4 days ago before I did a res change. We are still in veg but I think I am going to switch once this plant pops back up. Ever since the res that plant has been going down hill. (Reasons why?) before putting the plant back into the new res change I submerged the roots in pure water to rinse them, is that bad? Also the PH was 7.9 for 2 days because I ran out of PH DOWN. As of last night the PH got fixed, this morning it looked much worse. I have no idea what to do at this point..."
anyways you may have fixed your issue usually drooping with hydro, is overwater or ph lockout. With you trimming leaves off and rinsing roots, changing res etc you may have shocked it a bit, I would give it a couple days and keep an eye on it to see what happens. As long as you know everything is solid I wouldn't worry.