Check out the flushing sticky at the top of Problems. Don't flush at pH 9. Use pH 8, flushing with a correct pH Up product, until your runoff reads ~6.4. I don't think your tap water is actually 9; the water utility would not allow that- check your meter calibration.
What is the hardness of your water out of the tap?
How large are the pots your plants are in, and how tall are the plants, and how many main branches/tops per plant?
stinkyattic Reviewed by stinkyattic on . Tip leaves drooping/curling 1st time indoor box grow...3'x3'x7'. Light: 600 hps @ 18-24" from tips Pots: Smart Pots 2&3 gal. Soil: Blackgold coco blend Nutes: Canna coco A&B, Rhizo, Zyme, Boost, PK13/14 water Ph: 6 I'm on day 10 of flower, and the leaves of one of my plants started this rounded drooping/curling at the tips. Other than that everything else seems to be okay. Just looking for somebody with experience who can tell me whats up so I can fix it. Thanx. -NoSalt. Rating: 5