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I'm not sure what will work for you, but for reference sake, I have a 400w in a 22"x30" cabinet and it hovers about 4 degrees above ambient.

I don't think he lowers the light for the new batch. I can't say I'm a 100% certain though since he doesn't explicitly say so. I figure that the rooted clones need about a week to acclimate to the intensity of the 1000w light. And by the time a week has passed, the clone has stretched enough to...

I built a 2x6 cab (more like an armoire) that houses 2x400w. A footprint of 2x3 for each light.

I own the ARP-1200EX which is a 12,000 btu, dual-hose unit, but I'm not happy with it at all. I found very mixed reviews of Royal Sovereign products, but I thought I'd try it anyways. Seeing as it was put into a 10x10 room I thought it would work well despite a few poor reviews, but I was...

I forget one detail about central air units. Newer ones typically monitor the pressure difference between exhaust and intake. This is how the system detects whether or not you should replace your filter. Aside from the notification, there shouldn't be any problems.

It depends. If you put it straight into the intake duct (typically square and covered by a filter) there shouldn't be any problems. This however will cause your AC unit to run longer because of the extra heat. And if your exhaust isn't scrubbed, the smell will be distributed throughout the...

I'm not sure how you took your temperature measurements, but the problem could be as simple as the placement of your thermometer. Heat is propagated by three methods - radiation, conduction, and convection. If your thermometer is exposed to direct light (radiation), your temps could easily...