I want to read more about this too. Clearex sounds good. IDK, but with liquid ferts I would, with super soil water only grows where the ddry ferts are fed in pre grow I am assuming that clearex would take care of that.
flushing seems to be the s.o.p for the garden world according to the reg and mj book on hand. I flushed my few crops and am happy.
I got nothing else to do though. sides look at my weight set. lol