How many watts can you run per inline fan you have?

mrwood said:

Lot of variables here.
What do mean by cool? X degrees 12" away from glass?
What size area? Lamps do not need cooling, but we need to cool the environment for the plants.
Also, fan size (cfm, not dimensions), lamp wattage, ductwork layout etc.

In gerneral, if you have a light that 'fits' the room, and you have a fan that will provide 1 room change every 3-5 mins, you should be OK.
I have had a couple of different setups (lamps, fans), and this guideline has worked for me.

Now, if you start at 80 F, you are not going to get any colder with HIDs. You may see some high grow temperatures.

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ShibaSpeak said:

Just like the thread title asks how many watts could you cool (All 1000 watt lights) with a single 6" or 8" inline fan like pictured below? Assume 80 degree starting air temps year round and few to no turns in the ducting itself is there a general rule of thumb?

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