I used Ocean Forest Fox Farm soil as the medium i flushed with Ph'd water this is the first time i flushed the plants, i do have bushdoctor sledgehammer Has anyone used it ?? with good results?? if so can you tell me how to use it????? but heard some bad things about it hurting your plants didnt want to risk it but might have to use it if they dont show signs of improvement. Well just have to wait and see what happens......How often do you flush, id say there is a salt build up in your medium, you saying you only feed hard strength, means i find it hard to believe its nute burn of that kind, however i think its nute burn from the salt build up in your medium, so again how often do you flush and what do you flush with?