Al B. Fuct
once had a dog named
Thanks for that. It's a bit of an investment but you absolutely will be pleased with them as long as you can get air through them and keep that air separate from that drawn into the op.ok.. your not the first person to tell me that a cool tube would do the trick.. but you are the most reputable!..
You'll especially want cooltubes if you have aircon. It's much less power-intensive to use an air-to-air heat exchanger (ye olde cooltooob) to transfer the lamp's heat energy out of the area than it is to put it into refrigerant, pumped with a power-sucking compressor to shift it outside. Cooltubes will make your aircon run MUCH less often when your ambient temps exceed your 25C setpoint and save you some major cash off the power bill. Yes, get the cooltubes in first!since i planned on investing in a portable ac ( which is expensive in electricity consumption alone ) i will definately try a cool tube first...
28 is much more survivable than 33 for sure, but you may still have some localised heat-induced problems near the lamp tubes. Cooltubes stop most of the long wave IR heat but some short wave IR passes through the glass and will warm nearby objects- like plants. If the ambient temp is closer to 25C, that effect is minimised as the plant can dissipate heat easily into the room airmass, coincidentally allowing the lamp to be dropped down lower. A cooltubed 1000 can be run about 300-400mm off the plants at 25C.the only doubt i have about its function is that my grow space is a room built within a basement.. the basement itself is not air conditioned and maintains a temp of about 28
so even if i have perfect ventilation and my cool tube is cooling the light enough to not allow any raise in temp, i will still be at 28.. which is by farrrrr better than 33..
Sorry, no. You do need a separate blower for the cooltube. The cooltube needs a constant supply of air at all times while the light is on. The cooltube fan thus can not be run on a thermostat. If you use your main exhaust blower to run the cooltube, you will not have any control over room air temp, which will be whatever ambient temp is plus a couple degrees C.exhausted by a 295 cfm blower. .
i was wondering if one could "get by" with just running the cool tube off of that, having the intake end of the cool tube pulling air from inside the grow (so it could double as cooling/exhaust)
Yes, getting another blower may be a bit of an expense, but this upgrade is really worth doing. When you're shopping for fans (150mm axial), check noise ratings. Cheaper fans are usually noisier. Go to a shop and listen to them, even if you buy the same thing online later on. If your fan does wind up making objectionable amounts of whzzzzzzzzzzz, use a fan motor speed controller (not a lamp dimmer!) from Ye Locale Hardewarre Shoppe to slow it down. A fan running at 80% capacity may make 50% less noise than at full boogie yet still keep the cooltube glass from warming, which is really all it has to do.