I think a lot of the issues with flushing comes from Hydro and the chemicals, that actually does have a lot of effect on the plant. Soil you can flush for days, and even making the plant eat all the nutrients stored in it, it would have to eat all the leaves basically transparent to get it to stop using them so...that's my view and a lot of people's, most of the argument threads are soil vs hydro with no one knowing who's doing what.