I feel the you breathing down my back they are that close guys we all our with in a few days of each other. Yeaster even if I see a bit of nute tip burn I stay the course bro I change nothing and surprisingly they usually never go any further. But that is what I have found out. Even when I get a bit of leaf curl I stay the course . But if I do see the start of curl I give a drink of two to three litres of straight water and between day 25 and 30 I give them all a drink of water not a flushing I hope this might help a bit. And there has been a few strains that just curl there leaf a bit I have had a few from mephisto once again I change nothing stay the course of my feeding schedule, But if the burn starts to crawl up the leaf I back off the base nutes right away which seldom ever happens thank god