Most efficient ventilation setup?

M4sT3rM1nD

M4sT3rM1nD

Well-Known Member
I added some new things to my grow room, I changed from soil to hydro and built my own ebb and flow table and drip system. I'm running two separate tents for veg and flower. I would like to have one system for both. I have a 6" inline fan and two 6" booster fans. Various circulation fans etc. Right now I have a booster fan pulling air from air conditioner and into the tent. My inline fan pulls from the carbon filter through the cooltube through the inline and pushes out through some ducting outside of the room.

Considering what equipment I have now, what would be the most efficient setup to have and run them together?

The veg room is a 48x24x60 with a sunblaze t5 46 and the flower room is a 3x3.with a 600w HPS.
 
Spirallight

Spirallight

Active Member
Sounds like you are doing it best for your situation. It's really hard to run multiple rooms with only one inline fan. Right now you have a single stage exhaust system. This means you have air intake, then a carbon filter, then an inline fan, through the lighting hood and out.

There is no real good way to make a single stage exhaust system run two grow rooms. The only possibility of that would be to run a single exhaust through two hoods. Doesn't sound like that would help you at all.

My thought is that you might not need much exhaust in your veg room with t5's. Get a couple of clip fans and just keep the air inside moving. Make sure to have passive intake holes somewhere so you are not just pushing stale air around. You don't really need to carbon filter your veg area especially if you are running the lights on 24/7. If you are doing 18/6 then those plants start to smell strong at lights out.

Put your main energy into the flowering room where if humidity gets too high you can have catastrophic problems. Humidity in veg can always be higher anyway.

With an extra inline fan you can run a two stage ventilation in the flowering room and single stage in the veg area. One inline fan would pull air from passive intakes into the veg room, then via ducting into your lighting hood inside the flowering room and out. The second inline would be used to run a carbon filter inside the flowering room with direct exhaust outside or into the bigger room.
 
M4sT3rM1nD

M4sT3rM1nD

Well-Known Member
Spirallight said:
Sounds like you are doing it best for your situation. It's really hard to run multiple rooms with only one inline fan. Right now you have a single stage exhaust system. This means you have air intake, then a carbon filter, then an inline fan, through the lighting hood and out.

There is no real good way to make a single stage exhaust system run two grow rooms. The only possibility of that would be to run a single exhaust through two hoods. Doesn't sound like that would help you at all.

My thought is that you might not need much exhaust in your veg room with t5's. Get a couple of clip fans and just keep the air inside moving. Make sure to have passive intake holes somewhere so you are not just pushing stale air around. You don't really need to carbon filter your veg area especially if you are running the lights on 24/7. If you are doing 18/6 then those plants start to smell strong at lights out.

Put your main energy into the flowering room where if humidity gets too high you can have catastrophic problems. Humidity in veg can always be higher anyway.

With an extra inline fan you can run a two stage ventilation in the flowering room and single stage in the veg area. One inline fan would pull air from passive intakes into the veg room, then via ducting into your lighting hood inside the flowering room and out. The second inline would be used to run a carbon filter inside the flowering room with direct exhaust outside or into the bigger room.
Click to expand...

Thanks for the reply. I assumed what I had was the best way but then again you never know. Both tents will be side by side. I thought about having a Y or T hookup type deal and still use the booster fan to pull from my veg tent and out through my cooltube and just run the 2 on one and use the other booster to pull off my air conditioning and just cool the room as a whole. I really don't have temp issues as of now but sometime in the future I'm sure I will be upgrading more of my equipment. So I'll run it how u say now and hook the two up together on the output that way I only have one exhaust out vs two.
 
Spirallight

Spirallight

Active Member
If you did the Y setup it seems to me like your fan would only draw air from the room closest to it. So I suppose that if the fan was in the flowering room drawing air from intakes into a filter into the cool tube and then into the veg room where the y is installed with a booster it could work.
 
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