First id like to say that after researching deficiencies i've learned alot about the possible causes like PH and over watering. Ive seemed to have found right balance with watering, and I currently use RO water at waterings and tap water with the nutes. The tapwater come out at around 8ph. I also added pulverized lime to the soil mix and its help alot with stopping twisted leaves and cal/mag issues. Problem is the mag deficiencies still persist. Not as severe as before but still annoying. Strain is purple trainwreck from humbolt. I use epsom salt with waterings when I see the symptoms but Im not sure about the dosage. I struggle with balancing over and under feeding. I plan to flower these girls at 15" for SOG and keeping them healthy is a struggle. Any suggestions?