If i have 10 42 watt cfls and 2 4 inch ducts one for intake one for exasut what kinda of fan would i need on both of em to jkhe tempature right.
Thanks

I just have a small box fan pointing at all 18 of my 26watt bulbs and temps never get up above 85

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hmm, i really need a exuast and intake fan though, for air circulation. any body have a idea of how powerfull of a fan i will need?

The 42 watters produce more heat than the 26 watters by a lot. Although maybe 18 26 watters is comparable, I think it will get pretty hot in there. Be ready with a 'light' to 'medium' powered 4" intake and outake fans, and another fan on low or medium osolating within the chamber. Although all this information depends on how confined the space is. Open space = easier to control heat, confined space = heat can spike during hot whether, and will be generally hotter.

Also a fan blowing over the roots of the plant will help fight mold. in general the more circulation the less problems.

For example high heat will cause mite and other infestations to reprocude more quickly, potentially turning a mild problem into a bigger one. Therefor running a little on the cool side is better, especially if you know you could get heat spikes.

Hope this helps, peace bra.

alright thanks. do u think i could cool it all with 3-4 pc fans?

Probably would, if placed correctly. If you have an intake, and an outake, and then one maybe blowing over the plants and one on the roots it would probably work pretty well. The only thing is what if it doesn't? With my regular fans I have the option of just turning them from low to medium or high. This way I can adjust my temperature on the fly. Something to think about.

i doubt that the pc fans will work

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