I have been getting a lot of issues. I first had what seemed to be a nitrogen deficiency but then my leaves started to sag. I was feeding them with every watering and giving them less than a cup of water in a 2 gallon pot of PRO-MIX hp , without RO. PH was around 6.5.After a while of no improvement I flushed the plants with 12.6 cups of water and they came back to life in less than a day.. the RO from the Flush was 6.8 .Soon after I feed them again after the pro-mix dried out they turned lifeless again with multiple deficiencies. I don’t know if it’s a nutrients lock out. Please help.!!!