Not sure about building an air cooled hood .I once ran a 400hps in a small closet I was able to bring in air from outside to cool it down though using an inline fan .Inline fans are cool you can hook em to air conditioners open windows they are a great way to pump cool air into a grow .
Not sure about building an air cooled hood .I once ran a 400hps in a small closet I was able to bring in air from outside to cool it down though using an inline fan .Inline fans are cool you can hook em to air conditioners open windows they are a great way to pump cool air into a grow .
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