Hey Runier, was readin your thread becuz ive just recently noticed burn on 1 or 2 of my leaves, im in my 5 week of flowering and am using ff tiger bloom, with earth juice sugar peak (0-6-4) . I use tap water that sits in the sun for 3 days to let any bad stuff evap out. 2 out of 3 of my plants are starting to show burns. This started very recently and it is in the same time frame as heavy feedings , and I mean light fert at the begining of the week and heavy feeding at the end of the week. I have cut back the feeding as of this morning, straight distilled water that is ph adjusted with ph down. And maybe just a quick question/ info for me, have you checked you ph meter to make sure you are getting true ph reading, Ive burnt my plants by a BAD ph reading. LOOKS GREAT THOUGH, enjoy the fruits of your stress and labor.