Depending what was in the pesticide, many will cause some “nutrient burn” like damage to leaves. Some use potassium salts in fatty acids, aka insecticidal soap. It can burn your leaves but better than a spider mite outbreak.
MaryJ and myself sat down and thaught hard,smoked excessively and figured out what I was doing wrong…I feel embarrassed to say this. However, In the beginning I PH the tap water and it read a perfect 7 than I didn’t ph it again I assumed it would stay that way.It did make an ass out of me as I ph again today and found out the water was my PH problem this whole time. I just hope I can save them. I feel like such an airhead…DAH!!!
Good idea. it is probably the most important aspect of growing; Control the PH.