I bought the 600 Watt grow kit from HTG Supply. http://www.htgsupply.com/Product-HTG-600w-Grow-Kit.asp However I could only afford the 4" carbon filter fan combo that has 170cfm. I wish I could get better ventilation but truly can't afford more. I am using an air cooled tube with the glass cover. http://www.htgsupply.com/Product-Sup...-Reflector.asp How much of a problem will heat be in my grow tent? Would it be so bad that I'm better off abandoning the whole thing, or would I be able to get away with it?