Will my room vent better this way or this way? (pics)

Hey, here's the 2 ideas i have, one sends fresh air straight to the lights, and the other sends fresh air into the room first. Also as a side Q, will I be better off controlling smell with a carbon filter to the attic on the exhaust, or an ozone doodad in the room?

edit: theres another 3rd pic down a bit

steezy said:

Hey, here's the 2 ideas i have, one sends fresh air straight to the lights, and the other sends fresh air into the room first. Also as a side Q, will I be better off controlling smell with a carbon filter to the attic on the exhaust, or an ozone doodad in the room?

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i think ur 2nd idea looks better
never used the ozone doodad
from the looks of ur lights,u plan on getting down
so maybe that ozone doodad might be better

I like the fresh air in myself. Are you gonna have enough CFM's for 4 lights?

Carbon filter is the way to go.

dieselhound said:

I like the fresh air in myself. Are you gonna have enough CFM's for 4 lights?

Carbon filter is the way to go.

Click to expand...

I plan on putting a 981 cfm fan on the attic exhaust, I hope it's enough with all the fresh air coming in.

you should make your light cooling system and your exhaust/fresh air system separate.
or even just use fans to vent the lights, but use co2 enrichment. this negates needing to have any air exchange.

I would go with your first option and have fans near the end caps by the 600's sucking air from the room. i would put carbon filters on the end caps and have air being sucked through them, which would deodor the air being pushed into the attic. I'd also put a "Y" shaped attachment joining the two sides of light to the one main exhaust pipe, so the air wouldnt get slowed down with steep angles. With the air being pulled through, you'll have a static, or negitive air current system- forgot the exact term if those aren't it.

Going with the first option you would also have a free window if you wanted to put in a window a/c unit.

And that way you could regulate, and pull, fresh air into the room as the fall and winter temps set in. If you used the 2nd one your lights would get the fresh air, not your plants, but you would have colder air cooling your lights( if the outside temps are lower then the ambient room temp). But i would still go with the 1st one and just directly monitor, or regulate the room temp through a/c cooling, whether it be a window unit or central air.

Co2 doesn't need too long of time to be asorbed by the plants, i believe its only 5-15 mins, so you could set a timer on the ac unit to shut off for that 15 mins when the Co2 is used. But it wouldnt that much if you kept the a/c or intake on.

forsure the second way, you're bringing in outside air and using it to cool the lights, which will be cooler air than what's inside the grow area.

Plus, you won't have to filter the air cooling the lights, and when you add filters to fans cooling lights, you make your fans less effective...dramatically less effective.

Here is the 3rd option, i chose to put the carbon filter on the end of the attic side, to ensure that ALL exhaust is properly filtered. the central air should bring in enough fresh air without extra fans. I want to run co2 in this room, im going to put in a burner, so I guess put it near the floor centrally? i have not yet done a room this size or used co2, so some of this is a lil new to me.

There NEEDS to be carbon filtering in the room so I am considering a 2nd attic exhaust fan to purely carbon filter air from the room, one of the walls is shared with a neighbour, so cant be too safe.

and heres a final 4th one, which has the fresh air cooled lights, and an extra fan to pull stinky air into the carbon filter, i will turn the fans off while the co2 burner is running so i dont waste it