Ok, ph to high beacuse you have hard water right? Ph to high? Buy spring water the cheap stuff at 89cents a gal is ph neutral, as for mix I recommend fox farms ocean forest, use clay for drainage, 4 parts dirt 1 part pearlite for airation , ok you have a nice cool mix suitable for both autoflowers and photoperiod plants, now you need food i recommend botanacare pro grow, ppm and such is on the directions, for autoflowers cut way back on nutrients or you will burn them, for blooming i use botanacare bloom soil formula or
atami bloombastic, now i have recommended the right soil for both autoflowers and photoperiod plants, i know it sux to buy water but if its that hard its a cheap option, or you can try to distill your own water, i recommend a nice light food but a good food for both autoflowers and photoperiod plants ppm are on the directions, if you want to stick with botanacare in bloom that's fine, I like
atami bloombastic 1 & 1/2ml per gal on low side, now I have recommended a good food, good blooming agent for both autoflowers and photoperiod plants, I have no idea how to help with your plants now beacuse I need pics to trouble shoot, so please don't say no one is willing to help, I have to grow autoflowers due to circumstances I have been growing them constantly for 8 years so me and a few other people do this here, you do not run them like photoperiod plants there difficult and a bitch, I'm better suited to help with those, the reason you ask a question and get 5 different ansers is common you need to use your commen sence to trouble shoot your own plants, what I mean is if I get multiple answers to a problem I go down the list, could it be this? No? This ect, you need to learn to hear with your eyes so you can catch stuff before it becomes a major problem.
Regards pic is dark devel autoflower by sweet seeds