i am having a problem with my set up i have the intake from outsite at the top of the "cold room" and the exhaust on the wall firing into my "2nd" room.

now the issue i am having is i am getting light out my intake during the night time. i have a manifold blocking off all the light. then a hole cut in the wood to fit in my aluminum sheet metal adapter which goes to 4" then i have on the white flex 4". setup like a 90. i taped a black garbage bag around the white 4" flex not know if thats where the light was escaping but no luck. i wonder if i put on a aluminum sheet metal 90 the a straight run down for a ft or 2. then hopefully that would stop light from escaping. or would it just reflect because of the aluminum. thanks for reading any input appreciated.
devion222 Reviewed by devion222 on . quick Question about grow room set up HELP i am having a problem with my set up i have the intake from outsite at the top of the "cold room" and the exhaust on the wall firing into my "2nd" room. now the issue i am having is i am getting light out my intake during the night time. i have a manifold blocking off all the light. then a hole cut in the wood to fit in my aluminum sheet metal adapter which goes to 4" then i have on the white flex 4". setup like a 90. i taped a black garbage bag around the white 4" flex not know if thats Rating: 5