Rs11 clones alien rdwc v system

This week has been a recovery week. Cleaned the roots in alien root rot x..turned lights down to 4x250w chiller still struggling..waiting for new big one..roots still look a little brown but nute solution is brown. New roots coming out of baskets nice and white and thick. Plenty of new growth. Keep topping and have added lst to try and combat stretch and allow light in. When running advanced ph perfect at half strength ph is too high at full strength ph drops back into the 5s. Ec at 2.8 but no sign of nute burn yet anyway..