I like the leaf fungs idea. Ive got the kinda the same thing goin on and with 2 weeks to go its not gettin any better. Ive got a multi strain grow and all four plants of this one strain look like ur pics. The other plants from other strains look great. I tried a lower and higer ph, rez change outs with no great results. Ive never had a cal/mg issue so im not sure if this is it or not. however,they are gettin big and frosty so my solution is to just cross my fingers and ride it out :character0180: good luck