Grow Room heating up quite bad, Thought i had enough vents help!

First lemme say i have a 8x7x7 room, refletix on the walls and DOW TR5 insulation board as the ceiling, Im running two 1000 watt next gens which are mounted out side the room, and thye are pushing agrosun bulbs in magnum xxxl reflectors. I have a 6' active air exhaust fan sucking air through both magnum reflectors out through my houses ducting (man is it hot upstairs lol).

I have no intake fan, so i had been trying combinations of leaving the door open and closed. It was to the point where i had to put a portable 8k btu air conditioner in there and pipe the hot air out through the reflectors and out with thhe 6' fan. The room reached a maximum 91 with just the exhaust fan pulling air through the lights and our the room into the house ducting, with the ac ive seen it as low as 77, but with that being said my exhaust fan that is being ran bya sentinal thermostat never ever shuts off and being connected to the air conditioner is leaving my humidity to high around 60+%.... So at night when its cooling down and hte lights are off the damn humidity dosnt go anywhere because i have the ducting from my exhaust fan hooked up to my ac and I think it isnt really exhausting that much air all tho i disconected it from the house work and it was blowing some what cool air and alot of it but for some reason it just dosnt feel like 456 cfms(not that i really know what that feels like).

So a couple questions, i have one or 2 sharp 90 degree bends in my flexible insulated ducting could this be the culprit?

Will i need to install another exhaust fan, and or an intake fan? And if so will my intake fan be okay just drawing in outside air from the room(my basements kind of warm since venting these lights now...)or will i have to get air from outside the house?

Should I be able to keep a room this size cool enough without an AC, with the active air 6' exhaust fan sucking air through the lights? Or is an ac generally recommended for a room this size or bigger?

What is a good way to keep my temps down in my DWC buckets that are hooked up to the bigg active aqua air pump it seems to be running at around 113 degrees which i know has to be blowing hot air into the buckets..

Could the reflectix i have up be retaining to much heat?

Sorry for the long post just a local grow shop informed be that one 6" hooked up to both thousands hooked up to my carbon filter should be enough to cool it.. and it sure as hell wasnt doing a good job till i put that ac in but my main concern is the exhaust fan and ac have to run 24/7 which shouldnt be the case, id like to have the room dialed in to where the exhaust fan can turn on and shut down being controlled by the thermostat to get it cold enough to give the poor things a break and then turn back on. All comments welcome thanks for the help on my first grow, pictures of my room can be seen in my grow journal thread i seriously APPRECIATE all the help i can get.

heres my take,i have 2 tents in a 12'x12' room myself so i know a bit about this.I think having 2 1000 w in this small of an area is crazy.I'm using a 1000 in a tent that is 6.5'x6.5'x6.5' with 33 girls vegging in her right now(I also have a smaller tent in the room)
You need more cold air going into your tent.You could do what i do,i use a window ac(u have a portable ac)take ducting from the ac to a inline fan 6 or 8 inches,i'm using 2-6"inline fans for my tent and 1-4" for the smaller tent.The humidity levels are fine at 60%,up to 70% is fine for vegging,and ideally you want 50% for flowering so your fine with that.but you need more fans or less lights,my opinion you have way to many watts for this small of an area

you need a fan to blow cold air in plain and simple..i would get a 4" inline

Make sure the 465 has straight ducting with little or no angles and curves. You'll also need active intakes given the volume of heat you are producing with 2x1000 watts. But, you can make this work without AC if your ambient temps are OK. The Son Agro lights generate more heat than conventional HIDs as well (but worth it I think). I have my lights outside the room as well, mounted to on top of the ceiling which forces me to adjust the plants instead of the lights but major help in managing heat. Reality is I grow several varieties and have different size/type plants in the room all the time so adjusting the plants height instead of the light height makes sense (for my situation). My original ducting for my lights was bent in a couple places, after I straightened out the ducting it made a 6 degree difference in the room!

So, work on the ducting and add a new intake blower (nothing less than 180 cfm given your tent size). If that doesn't work look into adjusting the duct from 4" to 6" if possible - big difference in volume of air that is moved!!

I have same size room.. and similar 1k lights, with the same 465cfm (rated) fan pulling through my lights. I had cool air coming in from the house a/c and a fan blowing in the room. My temps got up to around 90f. The problem for me was when the house got to be the temp that the thermostat was set on, it would just recirculate.. which was warmer air at times.

I fixed it by doing what the other two posted said.. bring in cooler air.

I ran a 6" duct to the exterior with a cheaper inline duct fan from the big box store. I cut a 12" vent through the bottom of my tent for a passive intact coming off the cooler air on the ground outside the ten.

Doing those two things:
Dropped my temps to maxing out at 78F
Dropped my humidity from 60-70% to 30-40%

Thanks fellas, had to pull a 12 hr day, I just got home about 2 hours ago and was surprised to see my father had came over to help me out and ducted out all the hot air from the lights out the dryer exhaust and not into the house ducting I'll save that heat for later in the winter, glad I didnt take anythign down and just ran a new set of ducting. Pics tomorrow.

Now as to what I did, I went out and grabbed another 6" inline fan, I had it installed to exhaust air from the top of the room because I had my ac exhaust hooked up to the exhaust fan cooling the lights.. and i\I was having humidity problems and it wasnt exhausting, so I figured i\I wasnt moving enough hot air outta the room and humidity because it couldnt suck enough through the ac vents,well what I wasnt thinking was that the ac blows HOT AS PHUCK AIR, ./slaps self... so I unhooked the ac, and tried to run it to the 6" exhaust fan thats coooling the lights with a y pipe branching off the fan, but for some reason the ac was pushing air through the lights like the 456 cfm fan couldnt keep up with an air conditioners exhaust fan... weird

So I turned the new damn fan around to suck in air( stupid me I cut the hole in my wall up high because I thought I was gonna be exhausting air, so now I have duct work hanging from the new fan like a rock in a sock, and now its bringing in cool air from the bottom of the basement floor at 77 degrees, and the lights are once again being cooled by the air in the room and not heated up from the ac exhaust.. but my lights went off 20 mins or so after I had it all hooked up properly.. or so I think.. so ill have to wait till tomorrow to update yall.

Once again thanks for all the help and comments. sorry if im rambling or it dosnt make sense Im so damn tired.

here the inside of my room
The ladies fresh in flowering

The insulated duct i had on my air conditioner attacked to the reflector note the sharp 90 degree angle of it.

The other reflector with a sharp 90 degree angle on the ducting leading to the exhaust fan

The Ballasts mounted with their own

The outtside of the room, Its made to be able to be transportable, all the walls are 4x8 premades with studs 16"s apart and all bolted together with carriage bolts. Anything thats not permanent, its screwed on for easy of dissassembly, can be taken all down in around an hour or less.

This is how i had the exhaust ran up into that hole in the top left of the picture, i had to actually fabricate my own adapter for it due to its small unusual size. That is now eliminated but still hanging so i can use it in the winter because i could barely sleep last night due to the temps and humidity lol...(ill take a picture of my new ducting tomorrow.
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The ladies just before going into flowering...in lovely sepia.

Okay so after reversing the exhaust ffan i bought to an intake i ahve the temps down to around 79 80, with 50% humidity.. but it just seems like thats not low enough there is heat pockets in the room where temps are about 82 degrees still, its to a point where i just dont know what to do now, ive tried everything air conditioning the room, air cooling the lights , air condition cooling the lights, exhausting the total room and leaving the door in for an air intake.. I just cant seem to controll the heat from these 1000s in such a small room apparently........ There appears to be sweat spots on the plants just randomly, there is weird necrosis on the leafs still , and whaat appears to be nut lockout or a ph problem, their drinking so much water because of the temps in there.... sorry for the ramble imjust lost as what to do next..... i guess ill go buy another fukin 6' and try one air cooling hte lights one exhausting the top of the room, and one venting air in on the bottom of the room.. untill then i guess ill just be worrying my ass off about destroying my babies.

like i said,way to much wattage for such a small area

lol ohh well they are soaking it up now. loving life, room stays about 79 during the day, 70 at night, co2 is working great, and there are many flowers a bloomin

Switch to LEDs maybe. They should get your temps down.

First off is that a portable air conditioner? and how much did it cost, is 99$ a good deal?
You should be able to get your temps down to around 78-80. I have a roughly 5X5X6'7" tent. I run an Intake 435 Hydrofarm 6" through a Hepa, Exhaust is the same except through carbon can filter. Important these are controled by variable speed controlers (speedster) the fan plugs into the speed sontroller and the speed controller plugs into my Greenair MCC-1 main controller. They can then be adjusted i also run a 6" sunleaves vortex on my 1000 watt HPS in a Sun Systems reflector "old rectangle style"4" but sealed" this also runs through a speed controller. THERE Should be No bends in your ducting or as few as possible, and then as short as possible"took me awhile to figure that made such a difference"4 degrees for three slight bends here". I then put a layer of some silver light /heat block over the top of the buckets until there almost in a seperate secction.its 6 degrees cooler down there. u can get the foil stuff at menards hom depot, its like bubble wrap with foil on it.. works great. Lastly i run CO2 via a Geen Air MCDC controller n sensor. it seems to help the plants tolerate heat better anyway doesn't help...
I i were u i would run the Air conditioner into the room from outside it yet close, and then try to exhaust on the opposite side. I would run the air conditioner i guess id try to tweak it to just get it down to where ya want it and not to cold
i Hope i helped a little maybe, i totally new here but others have helped me soo much i just had to try either way
Peace and goog luck
Nicklebags