Ive built my own tent, i have a 6" outgoing carbon scrubber, shooting the hot air out of the roofing of the house (tent is in the roof), i also have a 4" intake fan which is sucking fresh air in from the other side of the house. I am running a 600w HPS system. the roof is still getting to hot, outside temps are around 20c would really like her down to 25 as its a bit risky having a roof hotter than barbados. What are the thoughts on it/tube cooler?