tony5haw1988
Member
I'm going to be using a 80cm x 80cm x 160 cm grow tent with an extraction and input fan, my question is what cfm as a minimum am I going to need? The extraction is going to be run through a varbon filter
working out air replacement
- Thread starter tony5haw1988
- Start date
jondamon
Well-Known Member
What lighting are you planning to use?
This will play a big part in fan choice.
Your room is around 28cubic feet. However if you plan on using a 400w hps for instance then a good 5" or 6" fan would be best around 200-300 CFM.
If using flouro or CFL then something around 50CFM should probably work. A bathroom fan and DIY carbon filter could even work under these conditions.
J
This will play a big part in fan choice.
Your room is around 28cubic feet. However if you plan on using a 400w hps for instance then a good 5" or 6" fan would be best around 200-300 CFM.
If using flouro or CFL then something around 50CFM should probably work. A bathroom fan and DIY carbon filter could even work under these conditions.
J
tony5haw1988
Member
400w hps with cool tube will be used and a 4" inline to extract and the same to input air, just wanted to make sure I had enough fresh air in there
jondamon
Well-Known Member
IMO you would be better served using a 5" with carbon filter and the cooltube then a 4" as your intake.
This will help you control temperatures alot better as your area is quite small.
I use a 400w hps in a 3.2x7x8 room and I use passive vents along with a 6" fan and filter in an open reflector. I also use a temperature sensored fan speed controller.
J
This will help you control temperatures alot better as your area is quite small.
I use a 400w hps in a 3.2x7x8 room and I use passive vents along with a 6" fan and filter in an open reflector. I also use a temperature sensored fan speed controller.
J