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I Will get a 450cfm fan then. If its too much i can put a variac on it.

Okay thanks for the reply. Good idea with the thermometer.

Yeah, but when the lights are aircooled in hoods, the room size shouldnt matter i Think ? But its a 8x4 tent.... I use a approx 1300 cfm as outlet in the tent, with a scrubber.. Its connected to a variac controller. I just need to know what cfm a fan connected only to the lights should have...

Aircooled i forgot to say. Have in and outlet in the tent on the side.

Hi people. I an looking for a fan, or to know how Many cfm i Would need to cool the lights down. 2x600w hps lights. Anyone knows ?

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

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

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.

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.

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...

Okay. I'll post A thread when its started up to show the setup and progress. Thanks.

Okay. I just want the best option, if its cfl, or t5, or whatever... I Think i have the rest figured out, but that part with seedlings, and lightning just puzzled me. Thanks

Thanks. I'll try it out. Maybe i'll be back with more questions later on. But Thanks for your time.

Hello, im from Denmark, im am just getting started to growing, so am looking for some maybe Quick Answers to my questions. Hope you have the time to help. 1) when i plant the seedlings, how Much light should i use.? And should i use the full setup from the start with the air outlet and so on...