Cfm for A 4x4x8

My inline fan is temperature controlled, mininum 20% power it runs at.

The fan is 820m2 pr hour, i Think Thats about 480cfm.

The tent is 1.2mx1.2mx2.5m, Thats about 4x4x8 tent.

Im gonna have A 600w in there in a adjust a wing.

Can you help me with what mininum % the fan should be set to, to meet the air Exchange Needed.?

If its 50% that Would be 240 cfm.

If i calculate right, the tent need 128cfm to Exchange the air 1 time pr minute...

So if Thats right i Can set the inline fan at mininum 20% Thats 96cfm. Then i should be enough? Then it just up the rotations if the temperature rise.

Are you pulling through a carbon filter. I cool my 4x4x7 with a 190cfm at 3/4 speed through a carbon filter under a 600. I don't think you will be able to keep it cool running 96 cfm's.

With that setup you will be more worried about cooling than air exchange.

Yes. Through A Carbon filter... I just need what mininum % i should set it to pull, when the temperature is right....?? If it gets too hot it should start up and go to 100% until its the right temperature again.

The fan is 480cfm, just need to know what percentage to set for mininum on the controller...

Should it be 50% 240cfm?
25% 140cfm? Or what Do you Think ?

Im

Most 6" fans are in the 400-500 cfm range and that is typically ideal for a 4x4. I use a 6" @ 460cfm in a bare bulb vert 600w grow and it's a perfect fit.

Ok. But at Night time when the bulb is off, and lower heat Then, Can i run it at 50% Then ? Or should it run higher? Thanks for your time

Dk New said:

Ok. But at Night time when the bulb is off, and lower heat Then, Can i run it at 50% Then ? Or should it run higher? Thanks for your time

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Run your fan at whatever setting is necessary to maintain proper environmental conditions in your room or tent. I will say that in my experience, you want to focus just as much on proper ventilation and circulation during lights off as you do during lights on as RH tends to rise during that time.

This is something you are going to have to figure out as you go. As Stated I can keep my room under 80 degrees with my fan and filter running around 160 cfm's that's with 65 Degrees intake air. lawlrus uses more cfm to keep his cool so that's just 2 examples of how each set-up runs different and we still get the same results.