I need some ventilation help!

Okay, I need some help with my climate control and ventilation. I've fired up the COB grow light in the closet and have been running the oscillating fan and the inline fan and taking temperature readings in the closet and outside the closet. The closet is running a bit too hot at around 85F degrees with the intake air at 71F degrees. So a temperature difference of around 14 degrees.

I also took temperature readings with the carbon filter removed and temps were around 79F degrees in the closet and a temperature difference of around 8 degrees between the closet and the room. So it seems I'm getting too much resistance from the carbon filter and not enough draw from the fan.

Here is a sketch of the setup. I'm wondering if I should go with a larger carbon filter, or go with a more powerful fan and larger carbon filter, or maybe even upgrade to a 6" fan and larger filter? Does anyone have any thoughts? I'm assuming a good grow temperature would be around 80F for LED growing.

I've been playing with mine as well. Not that I know anything disclaimer but it seem like you need more pull. I have two 6" fans that I tried to rum with 4" duct to save money the and got poor air moment upgraded to insolated 6" at least 50% better movement.

All the rooms I have done my fans are always connected strait to the filter and in side the room. like so hope that helps

Hell, You draw/draft really good got any cartoons or other drawings?

I added a small 4" duct intake at the bottom with a pantyhose filter over it works good.

I think only the one tent vent is not enough air flow.

Need twice as much passive intake area. Peace

VegasWinner said:

Need twice as much passive intake area. Peace

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Yeah, since I'm going to upgrade to a 6" fan then I think I will add another passive grill. I'm thinking i might go with a Can-Fan or Hurricane centrifugal fan. I think that might do better than the axial with any static pressure with the filter and ducts. Maybe go with 300-400 cfm fan and filter with a speed control.

Fan is big enough you need more air flow capacity