that would be ideal, or u could just get a timer for the heater and hook it up to just run at night. you always want to go with an exhaust fan instead of an intake fan. its much much more efficent to suck air out than to push air in. the negative pressure from air being blown out will automatically pull air in from holes, cracks etc. if u cant invest in a thermostat for ur heater just get a timer and a thermometer that records the high and low temps. keep records of this and you will be able to fine tune your heating system. glad to be of help man. im happy to help people that have done their homework first. it annoys me when people ask really stupid questions that are common sense or should have been read in the growfaq. but anyways your off to a good start man keep it up. i had to change my res today. lugging 55 gallons of water isnt fun lol.

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