Day 38 flower Strain: gorilla glue 4 Medium: soilless peat based mix Pots: 5 gallon Nutrients: GH flora serries ph'ed 5.9-6.1 950 PPMs Water: RO with cal mag added watered EOD Room temp: 74 Co2 1100 ppms Lights: CMH at proper distance Im having the same issue pop up during flower over and over. This particular run is the same issue but much more severe. Leaf health is always absolutely perfect for veg and first 2 weeks of flower. Then about 2 and a half in it starts happening and progressively gets worse. on previous runs I thought I was overfeeding PK so I eliminated the liquid kool bloom. Basically following the 3 part recommended feed chart minus the kool bloom. But now I'm thinking I have a bad phosphorous deficienty all along and now worse. Also looks like a magnesium deficiency but wouldn't make sense because I'm adding cal mag and it's it's in the florabloom What do you guys think?