my water ph is around 7 maybe a little higher then lower, im feeding them with miricalgrow bloom at half streanth once a week. im afraid of increasing cuz i burnt the hell out of my other plants. im also using superthrive wich is somekind of hormone addative. ive been using it all along at the same streanth and its only been in the last two weeks that ive noticed leaves dying off. Should i add more ferts? or try and pinpoint the defincy and add that? I just caint seem to pinoint it.