I have a 600 watt dimmable hps in a cooltube, running it on 75% power right now, it's only 65 outside during the day, but it gets up to 84 in the room. I have a 200 cfm 4 inch windtunnel and a matchin 200cfm phresh filter, it sits inside room and sucks all air thru filter/tube/and out. Room is about 4x4x8. Just around 130 sq feet. My question is, should I get a portable cooler like posted in this thread, or should I up the fan to a 400cfm fan and filter? I was reading about that Whynter 5 in 1, says runs 1 hour per refill? That has to be wrong, and does it require the humidifier to be running to do the actual cooling? I dont want humidty during flowering. Which should I go with, cooler or new fan and filter? The cooler would be half the cost of fan and filter. Oh yeh I have one 4 inch intake with a booster ecofan on it, thinking about adding another 4inch intake also.