Second Grow Need Help!!!

Ok, so this is the second time growing first I'll explain the setup.
*This is an organic soil grow
*under 600W HPS lights.
*My soil mix is very light like 40% perlite.
*The plants are white widow autoflowers.
* I added 2 lbs of Azomite to the initial soil mix of 60 liters of soil for my micronutrient needs.

The first 2 weeks all I was adding was PH water. In week 2 I fed these guys a light dose of molasses and Earth Juice grow. 3 days apart from each other. Then plain water.

Around this time I began spraying them with neem oil. About 8ml neem amd 5 ml organic dish soap to 1 liter of water. I left them for 3 days and my roomate took care of my plants and he sprayed the neem oil on them a few more times. No problems where noticed upon my return in fact the plants where thriving.

After my return about week 3 and like 4 days I watered them with molasses 1tblsp per gallon, and sprayed them with the neem mix, next two days I started noticing little dead spots and gentle leaf yellowing, this got worse over next two days and started to notice new growth getting burnt and stunted and its just looking bad now.

I freaked out and fed them a medium dose of the earth juice grow (1tblsp per gallon) I didnt bubble this or ph it. After watering them with the nutrients and realizing that I didnt check the ph I check the solution and ph was super low( I'm not sure exactly my strips are accurate to like ph of 5.5 and it was below that). Then I checked the runoff and the runoff was at 6.2. This is usually what the runoff is at even with phed water. Its the next day and the plants are doing worse and worse it seems!

PLEASE HELP!!

The humidity amd temperatures where also on the high side for the past 2 weeks, like up to 90 degrees for a few hours and then back down to 85 throughout the morning and near night and upper 70s low 80s at night. Recently (past3 days ive lowered temp to low 80s.

I can't read that block of text. It hurts my brain when I look at it.

Get some paragraphs in there and I bet you get more replies. I promise I'll try to help once I can read it.

Molasses locks out nitrogen and other nutes like calcium plus everythng else going on youre listing is prob the cause..you shoukd only use it during the last weeks of flushing..

use mosquito dunks for certain bugs... And then dry out the soil

First keep the temp below 85 if at all possible and get some air on the canopy if you don't already have a small fan on her. Now deal with the ph check the soil ph first and make sure your letting her dry between watering. If the solid ph is acidic then you can add some dolomite lime. Now the bugs I love neem but it won't kill all bugs you want to get a scope or a loop or whatever the budget allows. Identify the bugs and let us know what you see you may have different treatment plan depending on what's eating her. Try not to treat until you have answers the worst thing you can do is the spray and pray method it will end badly your in soil there is time.
Better pictures of effected leaves will also help.

It looks like it could insects to me. Give us a better picture shot like Csufan97 say's, also get the magnifying glass and check under the leaves, where the eggs usually are.

Ok, bugs are not the issue I saw a few around the grow room but I checked leaves for mites and no major infestation is there. It is very possible the problems do look like nitrogen and magnesium deficiencies.

I never heard that molasses locks out nutrients though. I did quite a bit of reading on it as well. But these problems did start to occur soom after I fed them the molasses mixture.

So what should be my steps to helping these girls out? Should I wait a few days and cut the molasses? Or should I flush immediately?

Sorry for the retardly long block paragraph

it looks like a few things... bugs are eating it, slight nute burn perhaps and it's too hot. get an oscillating fan and point it at the plant so the leaves wiggle. wait till it's dry, feed it the "normal" amount you feed it and let things proceed as normal. properly measured molasses doesn't lock anything out. EXCESS molasses will. did you feed too much?

have you been overwatering it? i say don't flush it.

I dont tend to overwater, the soil is bone dry like and inch down before I water. I have 3 oscillatong fans in the room so circulation is very good, the plants all shake from the circulation. I dont use chemical nutes and this is the second time I've fed the plants so nute burn is not that likely, and the molasses like I said I used 1 tablespoon per gallon and used 2 gallons to water 5 -15 liter pots. The heat was fairly bad for a bit as it did reach 90-91 degrees for a few hours throughout the day. I keep it below 85 now it's been in the low 80s past two days.

I don't see any pests on the plant. I know you need a microscope to see spider mites. But I don't see any black dots or anything, and I have been applying neem for the past week, and I did it as a prevention method, I did not have a pest infestation. I saw like 2 - 3 flies in the room in lile 2 weeks and decided to spray neem to prevent an infestation. Ok so should I just leave them be and water them with water next time. and control temperature s