Hello it looks like the leaves are rusting, Bronze colours comming from the middle and get a more rusty look and then dying eventually Pls let me know what need to be done, I am using Organic Living soil method and water only way, Its now Day 35 Flower Phase, PGK, in 5-gallon TC
It seems to me that there is a Nitrogen overdose in combination with a Phosphorus deficiency. Based on the given information, flushing in combination with a bloom fertilizer might do it.
Start slowly and increase the dose over the course of one or two weeks.
Enjoy the ride and may the force be with you!