CoolBreeze87
Member
I plan on building a grow cabinet that will be approx. 3ft. high x 2ft. wide, and 2 ft deep. I plan on using either a 150 watt HPS home security light, or ordering a 250 watt grow light off of ebay. I'm not sure if i feel comfortable ordering lighting equipment over the internet, but anyways i plan on cooling the light by building a homemade cool tube. I found a link here on how to make one. The only thing the thread doesnt include is what kind of fans the person uses to pass air through the tube. Im not sure what kind of fans i would need. Would a 4" inline duct fan from home depot suffice for a 150 watt HPS? I plan on using an exhaust fan to expel old air from the rest of the cabinet and creating a negative pressure system allowing myself to use pvc pipes as a passive air intake. What size fan do i need just to exchange the air? I used this calculator but i dont understand what its telling me about the fan i need. My last question is regarding odor control. I was planning on using one or two of those hamilton beach true air purifiers with the carbon filters, would this be efficient to reduce some of the smell produced during the grow or should i just build a homemade carbon scrubber?