How to cool a Co2 Enriched grow room?

I just got a new 1000 watt MH air cooled, I'm running with my Appolo 300 watt LED. It's at like 90. Degrees now I want to turn on my other 600 watt MH but I'm scared that will make it hotter, I use a crappy duct fan from Home Depot, I'm getting a hydro farm 6inch fan soon, will that take care of it or no? I pull cold air down from my attic because it's winter and push the warm air back up, I Waldo have a water chiller in there which gives off heat, I'm going to get longer tubing and hook that up outside the grow room. Do I need like an evaporative cooler? What about a portable A/C? I was thinking about getting a 4 inch crappy duct fan from a hardware store and pushing cold air down from the attic, but the attic doesn't have co2 enriched air. It would only be a small duct fan blowing down the air, the guy at the grow shop said it shouldn't be an issue he would be more concerned about the humidity getting too low. Someone else told me pulling that air in will lower my co2 ppm too much where it won't be effective. I don't have a co2 meter now and I don't plan on getting one soon. I use green pad co2 generators they are activated by 35%+ humidity and you just hang them up.
The air coming in to the light is cold and creates condensation on the ducting
The dimensions of my room are H= 93 inches, W= 65 inches L= 87 inches
It has a 14x14 corner that comes in at one of the corners, not a huge deal.

I think you need a stronger airflow in your garden if only an led makes it 90 degree

oh i read it wrong its with 1k watt mh but you should get an air current going through the top of your room stronger

I have co2, that's the whole thing, airtight environment

The owner of the grow shop I go to said that the reason I can pull air down from my attic is because co2 sinks, and the co2 enriched air is heavier than that cold 450ish ppm co2 (normal air) coming down form the attic will float above it. Obviously it's gunna change it a bit but anyone ever do something like this and actual record the results with a meter. I think I'm gunna try pulling air in at a slow rate from above. No exaust...

This guy most likely isn't tying to profit off me, he helps a lot with my garden. Grow shops make a profit but he always seems willing to help so I like to give him business. He's suggested getting rid of the co2 if I'm having issues but leaving the door open will cause humidity problems also. I really would like to keep using co2. Thanks everyone, I always appreciate help

You need a mini split. Theyre expensive but they work great for sealed rooms.

Can't get a mini split for 2 lights

A 12k mini split is what I use. It runs off 120v and never draws more than 7.5 amps. I used to think I didn't need one either.

Kind of seems like a waste of money, using 2000 watts the co2 and mini split won't pay for it's self. What's the cheapest mini splits

MedicalMike420 said:

Kind of seems like a waste of money, using 2000 watts the co2 and mini split won't pay for it's self. What's the cheapest mini splits

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I run 2- 1000's with a CO2 burner and I picked up a mini split for like $700 and it's worth every penny. My cost to run every month went down from when I used a portable AC. I also have a dehumidifier in there temps always a perfect 75 with co2 ppm at 1500

75* and running co2. Thought co2 enriched rooms like it a tad hotter, 80*+. Mines at 83 currently until I drop the ppm last 2 weeks of flower

So what is it? Lol, the guy front the shop says that I really shouldn't go above 80 but mid 80s are okay. I thought 84 was great but he said it's not unless my ppm is over 1300, idk what it's at. Do I need to seal the doors or is shutting them fine?

well you have a ppm gauge

If you get the right levels without sealing the room then screw it unless you want to seal to stop the smell better

MedicalMike420 said:

Can't get a mini split for 2 lights

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If you can't do a mini split, I would recommend a portable dual hose AC. It would have it's own intake and its own separate exhaust. It would not pull air from the room, but rather from anywhere you choose to pull from.

I beg to differ to your statement.

I run a sealed room with co2 And running a quality dual hose portable ac unit. It does in fact pull negative pressure, resulting in air being sucked out the room when my ac is running. The panda film on my ceiling and floor as well as my wall material gets sucked in a bit. Plus I can see my blueprint dbac2 co2 controller losing co2 when it's running. It's not alot, but it looses co2 concentration. I have my bdac2 on fuzzy logic, this is how I can see the values drop.

hmm, interesting. I have a dual hose in one of my rooms, I haven't noticed such conditions. I would still recommend a dual hose AC over a single, or not having an AC at all. The OP said he couldn't do a mini... I wasn't trying to suggest a Dual hose is the best thing you can choose, but in the OP's case it might be.

I also have both the intake and exhaust hosed triple wrapped with saran wrap and 3 layers of 3m hvac flex tape. Therefore no air leaks are possible from the hoses. All my hood ductwork in the room is also the same way. All seams in my room are 4' overlapped and 3x taped. All screws are the same way. I have 6 layers of material on all walla, ceiling, and floor. I have ocd so everyrhing is well beyond the normal room build.

DemonTrich said:

I also have both the intake and exhaust hosed triple wrapped with saran wrap and 3 layers of 3m hvac flex tape. Therefore no air leaks are possible from the hoses. All my hood ductwork in the room is also the same way. All seams in my room are 4' overlapped and 3x taped. All screws are the same way. I have 6 layers of material on all walla, ceiling, and floor. I have ocd so everyrhing is well beyond the normal room build.

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how often have you been refilling your tank?

At 1500 ppm every 7.5 to 8 days

I'm in an 8x12x6.75' room