i used batmix to flower, transplanted 4 week old clones into it, no nute burn, never fed anything except molasses in wks 4,5,6 of flowering, no nitrogen deff, dead leaves or anything else after 8 weeks in bud no need to feed, i would use it again if my local gets some more in, postage makes mo too expensive. i would not however, fancy putting young clones or seedlings into it i think it will burn them.