PH stays b/w 5.8-6.0. I check 1-2 times a day. Using RO and 3 stage Flora. PPM's are around 1000 now but a few days ago they were up to 1400...Is that too high for second week of flowering? Could it have to do with cabin pressure inside my box? Maybe not enough exhaust? Temps stay b/w 80-90 F during the day and down to about 75f at night. They seem to do some heavy drooping when the lights go off. Is that normal? Thanks for all the help guys. Much appreciated.