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How many CFM do I need?
- Thread starter DoDad
- Start date
DoDad
Member
Hot as hell. one 150w hps and 4 23w CFLs. My current fan is 4"/100MM inline mixed flow duct fan rated at-101 / 97 CFM and it was doing ok until recently. I think my filter may be clogged.
DoDad
Member
I removed the filter and the temps dropped 10 degrees.
...yeah, can you post some pics of your equipment?
...and 'a couple years' is too long for any carbon scrubber and not because they become 'clogged' and retard air flow but rather because the carbon becomes too filled with odiferous molecules and lose thier effectiveness.
...and here is a thread that will help you understand what the requirements are.
Ventilation 101
...just to make it easy there are some rules of thumb, first, go with a fan bigger than you need and add a speed controller.
...then, the formula for figuring how many CFMs in your space is WxLxH so a 4x4 tent would be 4x4x6=96 cubic feet so in this example you'd want a fan capable of exchanging about 200+CFMs or cubic feet per minute.
...in my own 4x4 Secret Jardin DR120 i use a 6inch fan with a speed controller that allows me to run the fan at about 5/8th's full power which means it runs quieter and with less stress to the fan while also giving me extra power when and if i need it.
peace, bozo
...and 'a couple years' is too long for any carbon scrubber and not because they become 'clogged' and retard air flow but rather because the carbon becomes too filled with odiferous molecules and lose thier effectiveness.
...and here is a thread that will help you understand what the requirements are.
Ventilation 101
...just to make it easy there are some rules of thumb, first, go with a fan bigger than you need and add a speed controller.
...then, the formula for figuring how many CFMs in your space is WxLxH so a 4x4 tent would be 4x4x6=96 cubic feet so in this example you'd want a fan capable of exchanging about 200+CFMs or cubic feet per minute.
...in my own 4x4 Secret Jardin DR120 i use a 6inch fan with a speed controller that allows me to run the fan at about 5/8th's full power which means it runs quieter and with less stress to the fan while also giving me extra power when and if i need it.
peace, bozo
