Yea i know burned leaf tips, had to, it's 1 gal of dirt, it's an autoflower, a bit over 2ft tall, I'll only get 1/4oz, now got 2 plants in 3 GAL POTS, after last watering saw one of those cocknocking gnats, seedlings are 17 days old, 1 critical 1 chem stomper, witch was stupid bc critical is tall and chem stomper grows out, any way waiting till dirt dried and DE Earthed them, even the seedlings so that white is the earth, in 3 days give a flush with no nutes, check ph and go. If you have pests this is the best way, it kills anything with an exoskeleton cheaply and fast, it's organic, I cured thrips with this stuff, that's why I dusted the seedlings even though there was no damage, did not mean to blab so long, sorry,