Where to put my carbon scrubber?

[Big Bud Bear]

My current set up has the scrubber last.

Light/Cooltube > fan > srubber


I've see set ups with the scrubber first, and heard it is better. My only question is, I saw a set up that had it first, then he had another fan for the cool tube, only issue is, what ever air gets sucked through the cool tube is not filter in a carbon scrubber. So I was thinking.


Carbon > light/cooltube > fan > more ducking > end|

Only issue is, will enough air be able to more through the scrubber enough that my fan does get stressed out, and the air flow is enough to cool my light/area enough.

 

[Big Bud Bear]

I dont see why I'd waste more money on another fan just for the light, no counting, if you do it that way, the air that gets moved though there is not un-stinky unless you have another srubber on the end of that line. Seems like a waste to me.

My new set up with consist of a 600w HPS in a cabnit system that is 90inches high. The bottom is about 4.5 feet, and the top is like 3.5. I want to flower on the botton and set up a veg/clone/germ room in the top

 

[MTF-Sandman]

The folks that use a seperate fan for air cooling the lights typically do it on an isolated venting system with a dedicated fresh air intake and exhaust for the fan so that none of the "dirty" air is pulled through the light...it's a great way to lower the temps and reduce the usage on the scrubber. The exhaust hooked up to the scrubber is then setup on a thermo so that it only kicks on when needed...

If you have any decent inline (not duct booster) then it'll be fine spinning against a scrubber for many years.

If you're dead set on using 1 fan, then make sure it's adequately sized and go scrubber > Light > fan > outside grow area. If space is tight, you can put the fan on the outside of the grow area with no ill effects. The downside to this is that all of the air that is used for heat removal must be scrubbed and the fan must stay on the entire time that the light is on unless you live in a very cool climate.

 

[Neuronaut]

i have a similar question... i hope you don't mind if i post it here. I have two 600 watt lights that i need to air cool. What size fan would adequately cool them? And how about the size fan needed to cool one 400 watter???

 

[Big Bud Bear]

I can control the speed of my fan, i also plan on putting the fan outside the grow area(the floor above the grow. This way, i won't have a fan putting out heat in my cabnit, also, the fan makes the most noise, so being on another floor a few feet above the ceiling, will make it impossible to hear

 

[MTF-Sandman]

i have a similar question... i hope you don't mind if i post it here. I have two 600 watt lights that i need to air cool. What size fan would adequately cool them? And how about the size fan needed to cool one 400 watter???

A 6" inline will be plenty. The rule of thumb is 200cfm per 1K, but I like a little more airflow personally. A 4" will be fine for the 400w.

 

[Big Bud Bear]

A 6" inline will be plenty. The rule of thumb is 200cfm per 1K, but I like a little more airflow personally. A 4" will be fine for the 400w.

will a 4inch be ok for one 600?

 

[Neuronaut]

i was hoping a 265cfm would be good enough just to cool the two six hundreds and i was then going to use my 6 inch vortex to carbon scrub and exhaust the room... what do you think?

 

[Big Bud Bear]

...

 

[MTF-Sandman]

The 4" will be fine for a single 600w...the dayton 265 across 2 600's should work as long as you don't have large amounts of back pressure. What air cooled hoods are you using?

 

[Big Bud Bear]

My only issue is, will air travel trough the srubber fast enough to keep the light cool, and will the air be filtered at this rate. I assume the faster the better in terms of keeping the light cool. But i dont want it so fast it does not get scrubbed completlely. I have a dail i can hook up to my fan to alter its speed

 

[MTF-Sandman]

Just match the CFM of the fan with the scrubber and you'll be fine. I'd probably aim for the upper end of the scrubber's abilities to make sure there was plenty of airflow across the hoods.

 

[Big Bud Bear]

Just match the CFM of the fan with the scrubber and you'll be fine. I'd probably aim for the upper end of the scrubber's abilities to make sure there was plenty of airflow across the hoods.

i have no idea how to do that

 

[MTF-Sandman]

What fan and scrubber do you have? The scrubber should have stated the recommended max CFM on it.

 

[Big Bud Bear]

I have the vortex vtx400
CFM = 172

 

[Big Bud Bear]

I have the vortex vtx400
CFM = 172
Also, My srubber,
I found it, Mine has Coco Carbon & It will handle up to 200 CFM.

Therefore it's safe to say even at my fans max setting it will fine with my current scrubber. I will have to alter the fan setting to control my cabs temp. It will be sucking air though a room that is air conditioned in the summer and heated in the winter.

 

[MTF-Sandman]

Yeah, you're cool with that combo.

 

[Big Bud Bear]

Yeah, you're cool with that combo.

 

[BLunTeD4LifE]

im sure that i have read somewhere that its best to have your fan blowing air thru the cooltube rather than it sucking the air thru...

i think they said its better to blow thru the tube because if u have the fan sucking the air thru then it can cause the fan to overheat...

i just got myself a fan and carbon scrubber today, im just waiting to get money for my cooltube so that i can get started building my new grow box...

i was going to have mine like this... carbon filter > fan > ducting> cooltube>and some ducting out of the box...

this should work right??

 

[MTF-Sandman]

It'll work as well...but most inlines can easily handle the heat of a lights long term with no problems. They're sucking so much air across the light that the air coming out is never really that hot anyhow. The drawbacks to pushing air across a light are that if there's ANY leaks after the fan, it will push air back into your cab which can cause odor leaks.