cal defficency?

so ive been noticing these spots the past few days on my plants i had some issues with the ph of the water before but i got that in check and i fed them yesterday still only about 1/2 strength because i think the ph was locking out alot of the nutes and it was fucking with my plant oim growing in soil its organic soil from jiffy i think my temps at most go up to 87-88 and at night there probly around 65-68 there 30 days old and i wanted to switch the lights to 12/12 but id like to get this figured out first so they go into flowering happy help much appriceated.........

The last two pics look like a calcium def. to me.

I see lots of deficiencies not just calcium. Looke like a little P deficiency too and possibly a little nute burn on the ends of your leaves. My guess is if your pH was off and now it is fixed and you are feeding a balanced solution then it should be all good by now.

Calcium def . Put come dolomite lime in your soil next time .