Building a grow room

[Leelandgrow3]

So I plan on building a room just for growing in my basement a room that is 8ft long by 3ft wide by 6ft high I have two 4 inch intake fans yo bring in fresh air will be buying a intake fan would like suggestions on good combos that are quiet for a 8 inch exhaust fan with filter and will be putting 4 inch filters on intakes as well and I have panda film already instead of painting walls and will be running 2 viparspectra 600w which are I think 270 watts each and a mars 900w which is I think 380 actual watts and a full spectrum cob 300 watts I will be doing treat wood on floor studs and for floor also be using regular after that for wall studs was only gonna use 1/4 inch plywood for walls and 1/2 for floor and 3/4 for ceiling tell me ur thoughts

 

[Leelandgrow3]

Anyone lol

 

[Dirtbag]

Doesnt get any quieter than Q-Max can fans. But you'll need more intake than 2 4" fans for an 8" exhaust. 2x 4" fans is only around half the actual volume of an 8". The area of a 4" circle is 12.5, so 25 square inches for 2. An 8" circle is more like 50 square inches.
A 6" exhaust would be better as it's about 28 square inches of area.

 

[Leelandgrow3]

What 6 inch for top or bottom I'm assuming bottom

 

[Dirtbag]

I mean a 6" exhaust up top would be sized better for 2 x 4" intakes lower down. 8" up top will draw too much negative pressure.

Some people like to size their intake smaller than exhaust but I prefer them either equal or even having an oversized intake with a backflow preventer. That way you dont really need an intake fan, just an exhaust, and the fan doesnt have to work as hard.

 

[MIMedGrower]

I mean a 6" exhaust up top would be sized better for 2 x 4" intakes lower down. 8" up top will draw too much negative pressure.

Some people like to size their intake smaller than exhaust but I prefer them either equal or even having an oversized intake with a backflow preventer. That way you dont really need an intake fan, just an exhaust, and the fan doesnt have to work as hard.

I found when i added 50% of exhaust speed for intake with a fan my exhaust fan instantly became more efficient and temps went down immedietely.

I was stuck at a higher temp with passive intake.


For my room anyway.

 

[Dirtbag]

I found when i added 50% of exhaust speed for intake with a fan my exhaust fan instantly became more efficient and temps went down immedietely.

I was stuck at a higher temp with passive intake.


For my room anyway.

interestng. I've never been able to understand the reasoning behind running a smaller intake than exhaust. I've never really tried to maintain negative pressure though so that may have something to do with it?

And I'll admit I did oversize my exhaust to compensate for the passive Intake.

 

[MIMedGrower]

interestng. I've never been able to understand the reasoning behind running a smaller intake than exhaust. I've never really tried to maintain negative pressure though so that may have something to do with it?

And I'll admit I did oversize my exhaust to compensate for the passive Intake.

I dont know where i read that it would help but it sure did. You can even feel the difference in air flow from the exhaust.

 

[Leelandgrow3]

What about styrofoam panels on inside instead of insulation

 

[greenscholar]

If your pulling air and exhausting air I wouldn't worry about insulation. My room is 8x7.5x.75 I run a passive intake and a 550 cfm fan. 1300 watts of led and it keep my temps under 82, on hot days obviously there is many factors.

 

[Leelandgrow3]

Well I live in the northern states it get ridiculously cold in the winter

 

[cemchris]

What about styrofoam panels on inside instead of insulation

R Board works great but gets costly when you start buying multi sheets.

 

[Leelandgrow3]

I'm it's about 20 degrees outside rn and my tent only drops to 66 at night and mi d u the tent is only PVC and panda film so no insulation or barrier in that tent I will do and day and night check with everything running to see how things go hopefully have it done tomorrow then next is exhaust fan

 

[greenscholar]

I live up north too. All I’m saying is if your pulling/exhausting air into your room insulation is useless. If you had a sealed room that would be totally different. Just trying to help you not waste money or time.

 

[Leelandgrow3]

Okay I get what ur saying

 

[Leelandgrow3]

Here's a start lol

 

[Leelandgrow3]

Well the intake fans I'll be running are only 100cfm each so I could go with a Ac infinity cloud line t4 4 inch which is 410cfm that would be plenty right cause double my intake opinions mise well get the nice one that has thermometer and humidity gauge

 

[Leelandgrow3]

I decided to go bigger cause it's right and can run fan on lower speed probably go with I ipower filter I'm pretty excited still need a door idea

 

[Leelandgrow3]

Here it is so far have some minor stuff to do