I need a fan HELP!!!

Hello I have a 1000 watt bulb and want to buy an inline fan to remove heat from the lamp ducting to outside of my 4x4x6.5 grow tent.The hydroshop recomended anything above 400 cfm,is this true. Thanks all in advance,, CW

It would be true if you were pulling air in through a scrubber and then your hood. If all you are looking to do is cool a 1k w hood, you can get an 8" inline fan that will do the job. Just make sure you pull air through the hood, not push it through.

Is it a 6" duct hole on your hood? If so, this is the fan I use for this purpose.

http://www.hydroasis.com/hy/productdetail.aspx?id=729&product=6”-elicent-in-line-fan-309-cfm

Elicent is an Italian brand. They are relatively quiet and heavy duty. They give out massive static pressure. As in, you put your hand in front of it and are like, "wow...that mofo is blowing some serious air". I'm no expert, but I'm told that CFMs don't mean as much as static pressure does. Again, just what I'm told. At any rate, I'd go with this style of fan. Be it elicent, vortex, canfan, or even ecoplus. Hope this helps!

dankasaurusrex said:

Is it a 6" duct hole on your hood? If so, this is the fan I use for this purpose.

http://www.hydroasis.com/hy/productdetail.aspx?id=729&product=6”-elicent-in-line-fan-309-cfm

Elicent is an Italian brand. They are relatively quiet and heavy duty. They give out massive static pressure. As in, you put your hand in front of it and are like, "wow...that mofo is blowing some serious air". I'm no expert, but I'm told that CFMs don't mean as much as static pressure does. Again, just what I'm told. At any rate, I'd go with this style of fan. Be it elicent, vortex, canfan, or even ecoplus. Hope this helps!

Click to expand...

CFM is how much air a fan will move with no resistance. Static pressure is a measure of the resistance. Add a filter, ductwork with bends etc and you increase the static pressure. It is good to have a fan that will move air under static pressure such as a good inline fan or a blower.

Also, you cannot just dump the air immediately outside your tent. It will cause the intake air to warm up and you will still have a problem. You need cool fresh air supplied to your tent to handle the heat issues, a fan is only going to do part of it.

dankasaurusrex said:

Is it a 6" duct hole on your hood? If so, this is the fan I use for this purpose.

http://www.hydroasis.com/hy/productdetail.aspx?id=729&product=6”-elicent-in-line-fan-309-cfm

Elicent is an Italian brand. They are relatively quiet and heavy duty. They give out massive static pressure. As in, you put your hand in front of it and are like, "wow...that mofo is blowing some serious air". I'm no expert, but I'm told that CFMs don't mean as much as static pressure does. Again, just what I'm told. At any rate, I'd go with this style of fan. Be it elicent, vortex, canfan, or even ecoplus. Hope this helps!

Click to expand...

Yes elicent fans are awsome and i stick with them

Hi serapis,during my vegetive growing I just want to cool off my bulb. But in flowering time I do want to use a type of filter to remove any odors. Any advice on filters?? CW

Hi Dankasaurusrex, My hood duct holes are 3.5 or 4 inch, but was hoping to get an adapter from 4 to 6 inch or larger if needed. I need it powerfull enough to pull air through a carbon filter or a type of filter that eliminates smells and odors during my flowering periods. Thanks CW