I honestly don’t know man I have trouble finding places to exhaust also. I am pretty much done exhausting other than small veg area went sealed with a mini split for flower(as soon as I can buy c02, venting a small amount to attic In the mean time). It’s really a case by case basis depending on your house and what’s available and possible to do. You could possibly dig a ditch under the deck and put a couple pieces of 8 inch hard pipe in there and then use and elbow so that it stick out of ground under the porch.I was gonna ask about the cooled lights. If I can exhaust out of the basement under the deck, how do I go out then exhausting the heat from the light? Like where do I exhaust that to