actually... i have an unrelated question about some plants i have going at the moment. had some problems with leaves turning yellow/brown and drying up. i have run through everything changed from my tap water (which i think may be too high in Ca), transplated, raised the humidity cause it was a little low, and flushed. things havnt gotten really worse but havnt improved much either. do you think this is an Mg problem. i was gonna give them some epsom salt next water, good idea??