dude. thats not a closet, thats a freaking room.. Ive NEVER seen a closet that freaking big.
Look, Cooltubes are a waste of money and they dont work as well as a good exhaust system. just make sure you have enough exhaust to exchange the air in your room in aobut 1 minute. Also make sure your exhaust to intake ratio is 2/1 * twice as much exhaust as intake ) and you will be good to go.. Just get the warm air into the attic or w/e and you'll be fine.I was going to buy a cooltube but after a ton of research I decided that they were not worth it.. A few reasons why >
" 8% is a minimum light loss through glass transmission, but thats for aircooled hoods Not cooltubes. Only with perfectly clean and flat glass. As soon as the glass gets dusty (happens within a few weeks) then you start to lose even more 10-15% + the longer you forget to clean it the worse it gets. Most people clean their glass once a grow tops, and some don't even do that. By the time they hit flowering they're losing upwards of 10-15%
Cooltubes are even worse. Much worse. Especially ones that incorporate a reflector on the outside of the cooltube. Because not only is your light transferring through curved glass which further reduces light transmisson over flat glass, frequently the 50% of your light it thats hitting the reflector has to transfer through the glass 3x... Any decent professionally built cool-tube will include the reflector on the inside of the glass, eliminating part of the problem. But I've seen many many DIY cooltubes with reflectors on the outside of the glass.
Major light loss, possibly upwards of even 20% Or god forbid, no reflector at all,in which case your looking at a loss of 30% or more."
If you think you need a cooltube, or your having problems with temps, you really just don't have enough ventilation. a 2:1 ratio of lighting wattage to ventilation CFM will keep temperatures a few degrees above intake without the use of aircooling. You can keep canopy temperatures the same with ample interior fans blowing directly on the bulb. Its a pretty common misconception that cooltubes and aircooled hoods improve yield by allowing you to get closer to the canopy. This is almost never the case. Sure the inverse square law holds its ground. But getting closer to the canopy means most of your light is concentrated on the tops directly underneath the bulb, overpowering them and wasting it. Possibly even bleaching them. Its much better to have your bulb slightly higher up and get a much larger footprint and even distribution across the entire canopy, rather than blasting the plants directly below the bulb.
The only time i'd reccomend using an aircooled hood (note: I would never recommend a cooltube because of the curved glass, unless you feel like paying for special reflectorized bulbs) is when the loud ventilation causes a major security concern and all options for quieting it have been exhausted. Aircooled hoods do allow you to run less fans. Other than that, save your dough you were planning on spending on that cooltube and spend it on better ventilation.
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PS - thats a big ass closet man lol.. Ive heard of "walk in" closets, but yours sounds like a "sleep in" closet lol.
