vent and air scrub

Wondering what you guys think about this set up I'm about to try in my room. if it works alright I'm going to do the same thing again on the other side to double to 4K watts. I'm running a 400CFM can filter (phresh filter) with a 435CFM tornado fan attached to 2 air cooled 1K watt lights into a (I think it's 24"x18") rectangle cold air return ducting. this rectangle ducting will eventually, in summer when necessary, have an 8 or 10 inch round elbow to make the turn to go out the house. right now it's just out in to the basement adding heat to the basement. essentially the duct run goes thru the wall of flower into the veg room where I will tap into to vent 4" light(s) in veg as well. when I turn the heated filtered air out of the house in summer I will put an end cap on the rectangle and use a back flow deal on the 8-10" round as well as a small booster fan, right now it's just open ended to spill it into the basement. Pictures will follow this post eventually, just bought the shit so once I get a minute and install it I'll put up pics to clarify WTF I'm talking about. a simple diagram would be: carbon can-->fan-->1K air cooled 6" tube light-->1K air cooled 6" tube light-->slight, under 90 degree bend to rectangle duct-->out. I'm sure this will be much better than the giant nothing I have been using for odor control and the dinky 163cfm fan I have been using to "cool" the lights but if anyone has a better set up for the exact same equipment I'm all ears.

Mine goes- carbon filter---->1000 watt--->600watt--->> 400 cfm fan--->out. sounds about the same. less bends the better. pretend the air is water and you want it to flow cleanly. Oh and you want to be pulling air over those lights not pushing.

Really? All the stuff I saw on installation said the opposite. I thought like you that drawing it was better than pushing it but the videos all said push across the lights because the heat would roach out the fan. That made a lot of sense to me, I burned up a dinky 163 CFM fan and I think that's why. You're already doing what I want to do though so experience trumps. Does you fan get smoking hot?

I am a push and pull kinda guy , I switch the fans out while rotating them as this will insure they last equally as long .. Phresh Filters are my favorites thus far but I wont rule out the Phat filters as they kick as too .

interesting..I have never heard otherwise. I guess it could work either way but I know for sure my buddy had his room set up pushing air and it was blazing hot.,,had him switch fan around cooled right down.

And no my fan is good to go..it isn't even close to the lights so heat isn't really an issue. But I see the argument for it now,you don't want the hot air from the lights over the fan..right?

That's what they were saying. Like I said to me experience trumps videos all day so I think I'm going to go your way first. I should post the links to those vids, huh? jsut a sec

I push my air through my lights.

Ive always pulled air over my bulbs, had the same fan running for the last 3 years with no problems.

http://www.youtube.com/watch?v=msnmu09zP-M

this guy too but.....kind of jank

somepotname said:

I push my air through my lights.

Click to expand...

I pull air through my lights.



If the air that reaches your fan is so hot, that it heats the fan up to the point of being able to damage it, then you're not really air cooling those lights effectively. My fans dont even get warm to the touch, but I'm only cooling 3 x 400w, and I use 2 fans.(probably overkill) I think with 2 x 1000w you should be fine, just dont' try to cool much more than that, because the warm air from the first couple lights wont do much to cool the heat from the lights that come after them by blowing hot air over the bulbs.

Also, unless your hoods are sealed super airtight(usually takes a lot of aluminim tape), pushing air though them can push hot air through the seams of the hood, and into your room. On the flip side, if you're pulling though a carbon filter before your lights, leaks in the hood can pull stinky air through the seams of the hood into the stream of vented air.

Metasynth said:

I pull air through my lights.



If the air that reaches your fan is so hot, that it heats the fan up to the point of being able to damage it, then you're not really air cooling those lights effectively. My fans dont even get warm to the touch, but I'm only cooling 3 x 400w, and I use 2 fans.(probably overkill) I think with 2 x 1000w you should be fine, just dont' try to cool much more than that, because the warm air from the first couple lights wont do much to cool the heat from the lights that come after them by blowing hot air over the bulbs.

Also, unless your hoods are sealed super airtight(usually takes a lot of aluminim tape), pushing air though them can push hot air through the seams of the hood, and into your room. On the flip side, if you're pulling though a carbon filter before your lights, leaks in the hood can pull stinky air through the seams of the hood into the stream of vented air.

Click to expand...

Bingo....!

Oh yeah, and insulated ducting...25 ft for 25 bucks at HD, and it keeps the heat down and does WONDERS for sound dampening.

didn't go get the insulated ducting and its kind of temporary til the cycle finishes and gives me room but I took your advice and went filter light light fan out.

been known to construct a separate temporary closet type room that you pump all the heat into, then have a carbon-to-exit exhaust in there. this works well w two rooms, if you have the space. carbon thru hoods is optional then or double duty smell proofer. depending on heat and line length, have used two fans in the same run if needed. fan tech have always been a high quality fan even if not econo. stay kool

Yah I'll be moving my grow to a different area soon and it will be....lights->fan->out...and then separate line for...carbon filter->fan> duct into lung room(ac/dehuey/heater if/when needed. then I think I can use negative pressure and just a hole, or maybe will need a small fan, to pull desmelled/cooled air back into the flower rooms. THese rooms are all inside of a bigger sealed room. anyone have exp with this type of setup while we're on the topic? dimensions 7x7x7 for the flower rooms.

I knew it was a little confusing. I could try again but I would make it worse.. pretty much its a big sealed room in garage.. with two rooms inside. one flower ,one lung.

how about two flower rooms? and the cooler lung surrounds them. separate veg. maybe one daytime flower and a pm flower. (just thinking about the airstream and that gazebo that you want to build on the lot next to you.)

Hey bud thanks for the thoughts. Well the outside room is more for protective, soundproof reasons. I could open my garage and you wouldn't notice anything wierd can double as trim/hang spot. and the veg will stay inside(as long as missus permits LoL), got a nice room for that. BUT yes on the two flower rooms. and the am/pm flower.
Picture three 7x7x7 rooms. One in the corner,and a room off each side...like this so- lung in the middle there. and 1600 watts air cooled in the side rooms. but no "fresh" air in or out of either room. stale flower room air is carbon scrubbed and pulled into the lung, where it is cooled, dehumidified, C02 enriched, and pulled back into flower room. I am no expert on this topic, that is why I am throwing it all out there for someone to either say,,yes that will work, or no. before i finish the build.

I have about twice the air leaving than coming in. Keeps it from burping. If venting outdoors consider putting some ONA blocks on the way out. I've noticed the carbon filters don't work as well when its really humid. Dehumidifiers help but I've still caught it stinkin when the humidity is really high. I use a Hepa on intake and Active Air leaving. All my air leaving passes over the bulbs as well.