I have two 600 watt lights cooled by a 435 cfm fan. The line is no more than 6 or 7 feet start to finish. Would I be able to attach a carbon scrubber to the first light at the beginning of the line, or do I need to buy another fan for the scrubber? And what size scrubber do you think I'll need for a 4X4 SOG? Thanks for any advice.
Need help with my ventilation set up.
- Thread starter uhhwhat
- Start date
fred flintstoned
Well-Known Member
It will work. But, cooling and removing smell on the same fan circuit is very inefficient. In fact, the filter will probably slow down the air flow enough to hinder cooling. Another fan circuit is highly recommended.
Air cooling your lights will remove about 60-70% of the heat they generate. In a 4x4 space, you probably have about 100 sq.ft. max. To effectively cool a space, you need 2-3 air exchanges per minute. A 6in. Vortex with a matched filter will do the trick. It's really overkill, but you can get a speed controller pretty cheap. It's better to under drive a piece of equipment than max it out. It'll last longer and if you go bigger down the road, you wont need a new fan. The controller will also allow you to adjust temps pretty easily due to changing weather.
Hope this helps.
Fred
Air cooling your lights will remove about 60-70% of the heat they generate. In a 4x4 space, you probably have about 100 sq.ft. max. To effectively cool a space, you need 2-3 air exchanges per minute. A 6in. Vortex with a matched filter will do the trick. It's really overkill, but you can get a speed controller pretty cheap. It's better to under drive a piece of equipment than max it out. It'll last longer and if you go bigger down the road, you wont need a new fan. The controller will also allow you to adjust temps pretty easily due to changing weather.
Hope this helps.
Fred
nl3004.kind
Active Member
very clear fred! nice...
purplehazin
Well-Known Member
You'll want a new fan for the carbon filter. It doesnt have to be a super expensive one; I use this and it performs VERY well and runs quiet (for an inline): http://www.plantlightinghydroponics.com/active-air-400-cfm-inline-duct-fan-p-2754.html
So if I found small scrubber and fan would I need to use any ducting or would it be fine to have it just exhaust back into the room?
The room I'm growing in is 4X5 so I know I can't expand any more. It seems like another 400cfm fan sucking air through a carbon scrubber would be serious overkill. Would something simpler like an air purifier be strong enough to handle the smell?
I'm using air cooled hoods, but I thought I had been told that it worked better to have the fan pulling air through rather than pushing. What do you guys think?
fred flintstoned
Well-Known Member
So if I found small scrubber and fan would I need to use any ducting or would it be fine to have it just exhaust back into the room?
How small? It needs to exhaust out of the room to do any cooling. you'll need to exhaust this air and use passive intakes for CO2 replacement. Remember, you need 2-3 air changes per minute to effectively cool. Since you air cool your lights, you can probably get away with a 4in fan combo. I think they're about 250CFM. I wouldn't go any smaller. The link purplehazin gave you is where I buy my Vortex fans. Cheapest on the net by far! Their filters are kinda high though.
The room I'm growing in is 4X5 so I know I can't expand any more. It seems like another 400cfm fan sucking air through a carbon scrubber would be serious overkill. Would something simpler like an air purifier be strong enough to handle the smell?
You can try it, but you'll probably be wasting money. Imho
I'm using air cooled hoods, but I thought I had been told that it worked better to have the fan pulling air through rather than pushing. What do you guys think?
Vortex as well as many other manufacturers recommend that you pull. Make sure all joints are thoroughly sealed with aluminum tape for maximum efficiency and smell control.
Hope this helps,
Fred
How small? It needs to exhaust out of the room to do any cooling. you'll need to exhaust this air and use passive intakes for CO2 replacement. Remember, you need 2-3 air changes per minute to effectively cool. Since you air cool your lights, you can probably get away with a 4in fan combo. I think they're about 250CFM. I wouldn't go any smaller. The link purplehazin gave you is where I buy my Vortex fans. Cheapest on the net by far! Their filters are kinda high though.
The room I'm growing in is 4X5 so I know I can't expand any more. It seems like another 400cfm fan sucking air through a carbon scrubber would be serious overkill. Would something simpler like an air purifier be strong enough to handle the smell?
You can try it, but you'll probably be wasting money. Imho
I'm using air cooled hoods, but I thought I had been told that it worked better to have the fan pulling air through rather than pushing. What do you guys think?
Vortex as well as many other manufacturers recommend that you pull. Make sure all joints are thoroughly sealed with aluminum tape for maximum efficiency and smell control.
Hope this helps,
Fred
rzza
Well-Known Member
i have similar setup except i run two air cooled hoods and i use one fan and the carbon filters connected at the end of the light (under 200 cfm).
also it is much more efficient to suck through the lights i have no idea what that guy was talking about. i used to blow through, its much better now. the fan is sucking through the hot air so the fan gets warm, i dont know if it will hinder the life of the fan or not.
also it is much more efficient to suck through the lights i have no idea what that guy was talking about. i used to blow through, its much better now. the fan is sucking through the hot air so the fan gets warm, i dont know if it will hinder the life of the fan or not.
Oneton
Well-Known Member
dude if u pull the air through your hoods then fan then exit u will reduce the life of your fan because of the heat
trust me u push through the hoods
if your setup or hoods are leaking air it would bypass your filter also
so u push .. then any leaks go back into the grow room not out
take a moment and think about it
trust me u push through the hoods
if your setup or hoods are leaking air it would bypass your filter also
so u push .. then any leaks go back into the grow room not out
take a moment and think about it
purplehazin
Well-Known Member
Pulling the air over the lights is more efficient, but it will bring the hot air into the fan. Best to get a higher CFM fan then blow air over it. I use a 400CFM fan to suck my 400W cooltube, and because it has so much force sucking, the fan never even gets warm.
fred flintstoned
Well-Known Member
Inline fans are designed to pull air. The air moves so fast, they are self cooling. I have run many Vortex fans for years and never had a failure. The smell issue is resolved by making sure all joints and elbows are tightly taped. Better efficiency,too.
The easiest way to resolve this issue is check the manufacturers website and look at the specs. I bet a big cola they say to pull.
Fred
The easiest way to resolve this issue is check the manufacturers website and look at the specs. I bet a big cola they say to pull.
Fred
Oneton
Well-Known Member
yes its more eficient to pull but a bigger cfm and push is better
"The air moves so fast, they are self cooling"
yeah self cooling with air over two 600w lamps? dunno bout that. but if it works for ya then bully.
me self i like to blow cold air over the lamp then out.
i kinda remember reading the max temp for my fan wasnt that high, lower than the air temp comming out of my cooltube (educated guess as i never measured the exhaust temp)
but there u go measure the air temp comming off your 2x600 tha could decide it for you
"The air moves so fast, they are self cooling"
yeah self cooling with air over two 600w lamps? dunno bout that. but if it works for ya then bully.
me self i like to blow cold air over the lamp then out.
i kinda remember reading the max temp for my fan wasnt that high, lower than the air temp comming out of my cooltube (educated guess as i never measured the exhaust temp)
but there u go measure the air temp comming off your 2x600 tha could decide it for you
Oneton
Well-Known Member
prob not
does it tell u on the fan what the max operating temp is? when i got my ruck fan i remember it being an issue for me, the max temp for it werent that high. wish i could remember! it was like 40c or round abouts. i couldnt really advise your set up though . go with what you think, just keep an eye on it for a while
does it tell u on the fan what the max operating temp is? when i got my ruck fan i remember it being an issue for me, the max temp for it werent that high. wish i could remember! it was like 40c or round abouts. i couldnt really advise your set up though . go with what you think, just keep an eye on it for a while
