Is my filter too strong?

[MariJesus]

I have a 440CFM Fan on a 6" Carbon Filter, my room is 2x4x8, so I have 64cu/ft in the room, so it is currently circulating the air in the room 7x a minute. Is this too much? Should I buy a speed regulator for the fan? Or will I be fine with that amount of circulation?

 

[GanjaGrow92]

Good question, I would like to know as well!

 

[dr.tomb]

I think the question is, how are your temps and such? Fresh air is never a bad thing, although probably will wear the carbon scrubber sooner as its passing more air...

 

[MariJesus]

My temps are pretty consistent, holding stable around 76 during day times, and dropping to around 68-70 at night. I have a digital temp recorder, my high temp is 81.5 and my low is 70.2. (this is just todays recording)

 

[MariJesus]

although probably will wear the carbon scrubber sooner as its passing more air...

the filter is rated for higher CFM, so I don't think will be too much of an issue.

 

[dr.tomb]

You should be perfectly fine. If your gonna start running co2, you won't want to cycle the fan on when its running. Otherwise you'll be fine, the exchange will be giving you fresh co2 from the fresh air.

No offence, but its like thing that putting your plants outside in all that fresh air will be a bad thing... Hehehe

 

[MariJesus]

You should be perfectly fine. If your gonna start running co2, you won't want to cycle the fan on when its running. Otherwise you'll be fine, the exchange will be giving you fresh co2 from the fresh air.

No offence, but its like thing that putting your plants outside in all that fresh air will be a bad thing... Hehehe

Lol no offense taken . i was thinking more along the lines of it won't be able to take in as much CO2 because the air is filtering to quickly.

 

[gfrg888]

the filter is rated for higher CFM, so I don't think will be too much of an issue.

Not trying to be a dick, but I think it's funny when people start a new thread for some feedback, then answer themselves... The more circulation the better!

 

[MariJesus]

Not trying to be a dick, but I think it's funny when people start a new thread for some feedback, then answer themselves... The more circulation the better!

Lol, I posted that in response to him saying my filter would wear out quickly, but yes I do tend to answer a lot of my own questions, but it takes me asking the question first to produce an answer. Secondly, I'm not your average take an answer and follow that method to the T, I ask others just for simple input. Whether it be negative or positive. I'm completely open to criticism and will never take offense to anything. So don't worry about "feeling like a dick" it's all good my friend.

 

[dr.tomb]

the best thing for your plants are moving leaves, so make sure you throw a fan in there. that way as the air exchanges, the oxygen that's being expelled from the leaves will move from the area and allow the new air that's coming in to replace this fresh air that has ~350ppm of co2. Also the added benefit of strengthening the stems.

 

[The Gator]

You mentioned a 6" fan - 440 CFM - Are your exhausting the air or recirculating inside the tent? Next question what type / size filter?

I ask because most filters cause restriction to the fans rated CFM - that said, you may only be moving 2-300 cfm in reality.

 

[jondamon]

You mentioned a 6" fan - 440 CFM - Are your exhausting the air or recirculating inside the tent? Next question what type / size filter?

I ask because most filters cause restriction to the fans rated CFM - that said, you may only be moving 2-300 cfm in reality.

A filter generally reduces efficiency by around 15-20%. So a 440 would lose approx 44CFM by adding a filter into the fan.

As long as duct runs are straight and there are no crazy angles in the ducting then up to around 10ft of ducting will reduce efficiency a little again by about 10%


If you've got 2x90degree bends in your ducting for example each 90 restricts another 20% air flow.


So a few bends and a filter and you could be down near 300CFM but not from a filter alone.




J