12x10 Room 2600W Flower/Veg Venting-Heat HELP!

First time building a decent sized grow room. I'm working with a 12x10 room which I split up in the diagram below.

Sealed with panda film
1 600w mh with 2 rotating fans.
Exhausting 6'' 450CPM (Carbon Filter) to the attic
Intake 10'' from AC vent pulling air throughout the whole house

2 1kw HPS with 1 large rotating fan
8k BTU AC Exhausting through light or???
Same Exhaust/Intake Setup

Have the electricity running good and everything seems sealed well. I just cant keep the temperatures down. I also feel like the rooms are not pressure regulated. The Veg room puffs out indicating too much intake; and Flower sucks in showing too much exhaust. I have a fan controller and it doesn't seem to help on either fan. (Or am I stressing out too much about this?)

After everything running, the temps seem to still be too high.

Veg - 83-85 lights on and room open (90+ sealed)
Flower 85-90 lights on w/ ac on full blast and room sealed

I thought my fans would be strong enough for the size rooms, but I believe I'm not quite doing something right. Do I need to create a closed circut with my lights? I could use all the help right now, with this being my first bigger set up.

What's the height of the room? Remember, you need enough CFM to clear the room at least once a minute, preferably 2-3 times... Your fan would only be able to clear the room once a minute if your room is about 3.5 ft tall, which I highly doubt, well, unless you were a hobbit I guess that would be ample space to move around...

It's an 8 foot room.

So with 4x3 and 10x5 I'm off by at least 150cfm. But I also have a 10'' inline bringing in fresh air that's rated for 660cfm.

Looks like I am able to get the veg room to around 79 without flower on.

Not to positive but possibly a higher cfm for outtAke or setup a 2nd exhaust fan ..??

have you considered setting each tent up with it's own individual exhaust setup and using the main room as a kind of lung room?

...what i mean is i'd have the AC out in the main room cooling the 'ambient' of that room, then the tents would pull that cool air in through passive intakes and exhaust it either back into that room or, ideally, into another part of the house, or outside if that's the only choice although this would definitely be my last, least attractive choice.

what you might could try is to set it up so the main exhaust pulls through your scrubber in the flower tent and then set up that inline booster fan to pull from your veg tent and because there is no need for a scrubber here, the booster fan may just be enough.

...and you want both tents sucking in some, that shows you have negative pressure and so no smelly air can leak out.

here's a couple pics of my small flower op and my veg tent and although they are in seperate rooms, they should give you some ideas.


...veg tent.


...flower room under construction.


peace, bozo

btw, if you are using air-cooled hoods you can exhaust them seperately and because they are supposed to be well sealed they shouldn't need a scrubber attached.

I live in a very hot place during the summer, so my focus is to proof this for summer use in mind. So I would like to dedicate the AC to the flower room.

My new idea is to use the 10" inline and reverse it to seal the lights and cool them separtley and add a splitter to exhaust the AC too.

Then use the 6'' can already attached to filter to exhaust both rooms and have a passive inline pulling air from outside the sealed placed on the wooden floor with a couple bends to seal the light.

Ideally I'd like to vent both rooms at the same time as I made a box to filter both rooms through the scrubber.

Simple idea thought about cooling pipes?

Cooling pipe and 2 exhaust and 1 intake works amazing! Even if ur taking out more air then your fan can bring in, air can still get in around the door, ect hope it helps!

I'm not familiar with cooling pipe? Google didnt really bring up anything. (Must be searching wrong. Haha)

I tried closing the circut today and didn't effect the effect the temprature too much. Also went ahead and created a passive inline and seems to help a little. Both rooms are creating negative pressure now. How will I know if its too much?


Veg room is good staying around 79-81*
Flower needs help badly 88-90* w/ AC on.

I really didnt think it would be this hard cooling 2k watts. Maybe I just need a better AC? I have a window unit I could create a box to exhaust into the attic. Not sure of the BTU's but would that make a difference compared to a portable?

It's all driving me crazy! Especially when I have some ready to flower and could clear up veg room.