Heating issue 10x13x8 room in a room

Hey there, hoping to get some help here. I have an insulated room within an insulated garage that is 13x10x8 with 9x600w digitals, all open, simple wing hood. I have a 10" exhaust with maxfan, a 6" passive intake for co2/cooling, and two A/c's; one wall mounted 12,000btu, the other 10,000 portable. The flower room exhausts into secondary room where it is filtered again before going outside. I manage to keep the room between 79 and 83. I'd like to add 3 more 600's. I've looked at mini splits, but am curious as to whether or not I can cool it by exchanging more fresh air/ducting my lights? What would be the best way to go about doing this? I have a 6" fresh intake and 6" exhaust out the side of the house, as well as a 4x13 boot. The boot is an exhaust right now, but with no ac units could reverse fan and use as intake as I cant cut anymore holes. Any help would be super appreciated.

The best way would be to buy a minisplit

Thats what i thought, was just seeing if there was a way to save some money and do it with fresh air instead... I guess at this point, whats a few more grand...

604dude said:

Thats what i thought, was just seeing if there was a way to save some money and do it with fresh air instead... I guess at this point, whats a few more grand...

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If you seal up and use co2 the mini split will pay for itself in 1 round with the yield increase . And if you ever quit. They hold a decent value.. I used a 2 ton for 3 years then ebayed it for 800 lol

My concern is the 3 ton wont be enough to cool 12 600's without an intake to ease the burden.

604dude said:

My concern is the 3 ton wont be enough to cool 12 600's without an intake to ease the burden.

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Eeeeh. If you are aircooling the lights then yes. If you are not.. It might but then with dehus and potentially a burner I wouldn't do it. I would get two 2 tons. I am doing 9 lights non air cooled with 4 dehus .. I'm using two 2 tons and i can drop the room to 70f