Multiple Issues I believe Please Help!

​Ok here we go...Setup is a 14x12x7 only using half the room right now before using the other 24. I have 24 running on flood and drain system... I am running the feed for 30 minutes every 3 hours.have 4 1000watt only have 2 running over the 24. venting in 8inch and pulling out on a 10" can 1035cfm... have it set to a sentinel controller and when temp hits 76 F during the day the fan vents. Night time 70F before venting so uses co2 wisely...My question is am I feeding them too much...Too much heat? Nutrient burn? Using Botnicare Pro with some bloom enhancers. They did great in veg...when I transferred they didn't seem to take well and I am trying to dial in the room. At first the lights were too close and the heat was high. I moved the lights up and change the temp at plant level... I also do have a circulation fan doing some help with wind resistance of course but helping the heat issue... At night it gets cold so I put in a space heater for night time temp to stay at 70...It looks like heat issue at first but this is 2nd week in flower and they aren't really blooming. I thought it was a shock at first for the first week but the way they look now I am really weary of them...So can anyone please give some good advice... Any help really... But if I can get a pro on board please!!!!!Thanks Guys!!!

Maybe the drooping is too much of flood feed or cold, possible root issue.
maybe its too much fluctuation of temperature? causing new leaves to curl and droop with over water? idk Harder to diagnose my own babies!

over feeding and overwatering

I did say how often I was feeding them... It's flood and drain...and I am doing it at 30 minutes every 3 hours... PPM is at 1300... Feeding with botanicare pro bloom...sweet... Aquashield... Liquid karma... And some AN piranha. It's a 55 gal drum and I am using botanicares feeding schedule with amount to use in the.res....
So maybe 3 hours is to much kick it to 4 or 5?