65 watt cool tube?

I have a couple 42 watt cfl's in a glass bake-a-round tube I bought off of ebay. I have dryer tubing on each end with one connected to a passive inlet and the other to an inline fan attached to the chamber walls that is blowing air out. So air is sucked in, flows past the lights in the glass part of my cooling system, picks up their heat and the hot air is blown out by the fan. I don't have to worry about a carbon filter on that oulet at least because the air never comes in contact with plant. Hope that helps.