Im planning to use a 150 watt HPS lamp in a 3ft x 1.5 ft x 3ft enclosure with two plants in a scrog setup. I want to have two fans running; one to get rid of the heat that the light creates and another to bring in fresh air from outside the cabinet. I will have ducting up to the lamp for the exhaust and ducting pointed at the plants for the fresh air intake. I plan to use small AC or DC computer type fans but Im clueless as to how many CFMs per fan I should get. I was considering buying some cheap fans with somewhere around 80+ CFM per fan that I found online is that a good level? Its usualy around 65-72 in the area the cabinet will stay. Any suggestions on proper fan sizes?
piercedpunkonpot Reviewed by piercedpunkonpot on . How Many CFMs do I want? Im planning to use a 150 watt HPS lamp in a 3ft x 1.5 ft x 3ft enclosure with two plants in a scrog setup. I want to have two fans running; one to get rid of the heat that the light creates and another to bring in fresh air from outside the cabinet. I will have ducting up to the lamp for the exhaust and ducting pointed at the plants for the fresh air intake. I plan to use small AC or DC computer type fans but Im clueless as to how many CFMs per fan I should get. I was considering buying some Rating: 5