This will be a pic run thru of the air system.

You can see the AC inlet to the room. Also on both sides of the door are two air inlets for the grow box.

What I've done is attach a 4" dry hose to 50% of the air inlet by the AC vent.

The hose runs up to the 430 watt ballast. A 12 volt computer fan suck air thru the hose and blows on some louvers. The cold air blows thru the ballast. The ballast is always cool to the touch. The fan only runs when the lights are on.

This pic was take awhile ago before the Mylar. You can see the sound proof stuff (blue). But light can pass thru some. There is a better shot of the ballast set up.
Next is the coffee csn csrbon filter. It's attached to the sucktion side of the blower.

The outlet hose goes thru the roof and down the side.

It exhausts out the window.

fan to blow air under the light.
This is the grow box (flash on)

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This is the grow box (flash Off)

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