my girls are rusting up pretty badly, its starting frmo the bottom up, fading leafs and rust spot, i have coco + about 20 soil, powderized soil sweet dolimite lime added to the mix and floranova bloom which has cal mag in it, im useing tap water, i mean my plants look very vibrant all in all its just the rust spots, im up to about two teaspoons of fnb almost daily , no leaf tip burns and plants are always perky, it seems that rust spots show up later with more intensity, a few girls are a few weeks away from harvest and swelling up nicely.. maybe ill add some blackstrapp molasess for a few straight days n see how they react...any tips?