Having Trouble Identifying Plant Health Issue

After doing more research it seems the problem(s) may be high PH and/or light stress. Lights have been on 24/7 since they were seedlings. I also discovered today that one of my auto-fems turned hermie - I'm guessing because I haven't been able to get the temp lower than 80 with the lights on.
I'm going to turn the lights of 10 hours a day and see how things go. My soil PH has always been a 7 - I added a bit of lemon juice to 1 Gal water (testing the PH before and after, not lowering the water's PH more than 1 point).
We'll see what happens over the coming week - not sure how quick they can recover, and with only 4 -6 weeks left until harvest I'll be happy if they just don't get worse.

P & K def, (also secondaries), absorbed at PH 6.5, most likely to be lockout and feeding every 2 weeks is not often enough for AF's in small pots. AFG's need 18 hrs light indoors.

Thanks for the info lahadaextranjera - much appreciated! I think it will be ready to harvest in 4 - 6 weeks. I've read that Ph adjustments should be done gradually so as to not shock the plant. How quickly can I get it down .5 for proper nute absorption? The Ph of my water is about 6.2 (tap water run through a Brita filter and allowed to sit for a couple days for chlorine or other stuff to evaporate).
I had to add several teaspoons of lemon juice to a Gal of water to get the water Ph to go down (6.2 to 5.6). Is that safe to use on my plants or should I use Aluminum Sulfate?
Should I focus on lowering the PH first before I add P & K? Or just do everything at once? Just want to make sure I don't create any new issues.

I'll set the light timer for 18 hours.

Thanks again!

whole plant pic, plz

I pruned the all leaves that were halfway dead or worse. But there is still tip burn (I think it's from a light being too close for a while) and yellow stems.
The first plant is the one that turned hermie. It's pretty sparse and pitiful looking. But the buds it does have are frosting up nicely.



Plant #2 - It's more robust and didn't have very many leaves showing symptoms (like I posted earlier) but you can see that a LOT of tip are burned all over the plant. I think that was from the first nute feeding when flowering began a month ago. It's not gotten any worse though.


Thanks for your help!