need help setting up 5x5 tent

I have a 5x5x7 tent with 3 600w hps and a 14,000btu ac. according to the 3000btu per hood this should be more than enough. I run lights at night but the temp is still 85 right under lights. I have a 900cfm 8" fan blowing through the 8" air cooled hoods and a co2 tank with sensor. The lights are in corners with only 2 90 degree turns and the ac is in the 4th corner. I am asking for help because it is too hot in there.

have your fan pull air thru rather than push it. btw 85 is fine with co2

curious wat u pull of 3x600 as well. im a fan of overkill lighting but ur raising the bar my friend. i pull 4-500 grams dry from a 4x4 with 1000 and and no co2.

First time with this set up. I have a 2.5x2.5 with a 600w that gets 400g. The strain I have won't go over 78 degrees. My only issue is the darn ac. It is dual hose so it should be neutral pressure in the tent but instead it's negative and wasting all the co2. I think I can lower temps by using insulated ducting on the ac exhaust. But I'm really upset at 2 brands of dual hose ac because they advertise neutral and they aren't.

i finally gave up and cut a 5000btu window unit into my tent. never looked back.