Need some help with exhaust/scrubber/intake

Hey everyone,
The area that I'm working with is 6'L x 2'D x 4'H (flower) Im using a 600w hps on a light mover. My question is how should I vent *(exhaust)* I want to use a carbon scrubber but i'm unsure how this works, I will run up to the attic and can bring fresh air into the area. If you need more info just ask.

I have a bathroom fan 80-100 cfm and a 465 cfm dayton blower to use. I can buy something else if needed.

I'm can't have any noise or smell, I can make a box and dynamate it to deaded the sound for the exhaust or intake. I have already done to the bathroom fan.

Use your big fan (465cfm) to exhaust the room and the hot air from the lights. Thats what I do and my temps stay perfect.

CarbonFilter -> Fan -> Light -> Exhaust out the room.

Your intake can be passive as your exhaust will be pulling cold air (down low) into the room.

Hang the carbon filter up high so it sucks the hot stinky air out. You can place your fan (you will need to make a box for it in order for it to be 100% silent) anywhere after the filter (because you need to pull air through, not push). But before the light, because you dont want any stinky air getting through your lights and out the room.

Any questions just ask.

bterz said:

Use your big fan (465cfm) to exhaust the room and the hot air from the lights. Thats what I do and my temps stay perfect.

CarbonFilter -> Fan -> Light -> Exhaust out the room.

Your intake can be passive as your exhaust will be pulling cold air (down low) into the room.

Hang the carbon filter up high so it sucks the hot stinky air out. You can place your fan (you will need to make a box for it in order for it to be 100% silent) anywhere after the filter (because you need to pull air through, not push). But before the light, because you dont want any stinky air getting through your lights and out the room.

Any questions just ask.

Click to expand...

I don't have a cooltube just a bat wing of sorts. at the moment this is what it looks like. 600w hps on light mover with the 100 cfm on the upper right side sucking air out blowing up through a 4" hole in the box that I built ie-real area 70"L x 20"D x 48"H . The (box) area is in a closet. I have a small Carbon filter and was thinking of buying a bigger one. anyways umm.... the issue that I will have is the space (small) and using the light mover helps with how low the light will be on the plants but limits the area that I have for extras.

So do I need to pull from the light itself? and how long does the fan need to be on at one time. ie 15min on 45 off.

I'm sorry I thought you were air-cooling your light.

You can just hook your exhaust up to a carbon filter. (Filter -> Exhaust out) with a passive intake. You dont need an intake fan for a small room.

attic---------------465 cfm fan---
-- --
l
l 4" insulated flexible ducting
l
Flower area-Carbon---l

bterz said:

I'm sorry I thought you were air-cooling your light.

You can just hook your exhaust up to a carbon filter. (Filter -> Exhaust out) with a passive intake. You dont need an intake fan for a small room.

Click to expand...

it would be to hard with such a limited amount of space using a light mover because what ever is connected to the light mover needs to move...

LoganSmith said:

attic---------------465 cfm fan---
-- --
l
l 4" insulated flexible ducting
l
Flower area-Carbon---l

Click to expand...

This should look different. I was trying to show the attic with a 4" hole the 465 cfm blower with 4" IFD going down to the flower are to the 4" hole in the box connected to the carbon scrubber. does this sound right?

yup. So basically you want your carbon filter in your room, with the IFD attached to a fan pulling the air into the attic. perfect.

what about the amount of time on/off. and the size of the Carbon filter.

6'x2'x4'=48 cu feet
blower fan 465 cfm

oh man thats too big of a fan for your room. your bathroom fan will work fine.

No such thing as too big of fan if you can keep it quiet. You fan cycle will depend on your temps. You will want it on while the light is on. While the light is off you will still want it on for odor control but maybe at a reduced speed. As long as your night temps don't go too low leave it on 24/7

Carbon filters are rated by CFM. Buy one that matches the rating on your fan.

if your exhaust is on a timer ull want an intake fan as well because you want fresh oxygen 24/7.

The 465 cfm fan is not adjustable , I was hoping to use the fans that I have but if I need to buy the right one I will. The light will on during the night to help with temps. A 600w is most likely over kill for the grow space but this is what I have. I was thinking two things *1- using the 465 fan running 15 mins on 45 off. I can change the time needed as needed. *2- I can leave the 100 cfm 30 mins or 45 mins on when the 465 cfm is off. I guess I will have to play it as it goes.

I also have a cycle timer that I use for the cloner that will allow me 1sec to 40 min on and 1min to ?# cycle. I can do 1min on and 5min off. which might be better. I will update.

COntrol the speed of your fan with one of these http://www.htgsupply.com/viewproduct.asp?productID=53142

If you turn off the fan all together for 45 mins you have no odor control. Set it up like this:

____thermostat___
power to fan ----< > --------fan
-----Fan controller--

If you wire the fan this way the thermostat will trip at a low temp set by you (60-62F) sending power to the fan through the speed controller. This will allow the fan to always be on but run at a slower speed when the temp control is not needed.

doogleef said:

COntrol the speed of your fan with one of these http://www.htgsupply.com/viewproduct.asp?productID=53142

If you turn off the fan all together for 45 mins you have no odor control. Set it up like this:

____thermostat___
power to fan ----< > --------fan
-----Fan controller--

If you wire the fan this way the thermostat will trip at a low temp set by you (60-62F) sending power to the fan through the speed controller. This will allow the fan to always be on but run at a slower speed when the temp control is not needed.

Click to expand...

I will have to look into that.

What you need to buy is some type of air cooled hood!