Is it possible to vent back into grow room?
- Thread starter Bose
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Bose
Well-Known Member
Can this be done through out the entire grow?
Bose
Well-Known Member
What was the question? The heater is electric
Yes, get a good carbon filter and fan to cycle air in room every 3 minutes or faster. Get a filter to big for your room and a smaller fan for filter. If it is hot outside then you will be doomed. But yes add a thermostat. @vostok what's the name of the thermostat you use. The one You put me onto for heat extraction
Bose
Well-Known Member
I have the stc 1000
Yes that's it wire that up to an exhaust fan and be done use heater at night if needed.
nomofatum
Well-Known Member
No, don't vent back into the grow room, I don't think that could even be considered venting. If you don't move air out of the grow you won't pull new air into the grow. If you don't pull new air in, you need to maintain CO2 levels artificially and you have to handle humidity build up in the room. If you vent to an outside room you will circulate the air and you can handle humidity issues outside of your grow space. Put the dehumidifier "up wind" from your grow intake.
I vent my grow to the room above it and have the dehumidifier where-ever I want it in the house. I only grow in winter as I use the grow for heat and can't maintain reasonable temps in summer or warmer parts of spring/fall. Plus there is a whole world of free light outside to grow as much as I want come summer. (Start hiking, it can be rewarding, evil smile)
I vent my grow to the room above it and have the dehumidifier where-ever I want it in the house. I only grow in winter as I use the grow for heat and can't maintain reasonable temps in summer or warmer parts of spring/fall. Plus there is a whole world of free light outside to grow as much as I want come summer. (Start hiking, it can be rewarding, evil smile)
Bose
Well-Known Member
What if I have another vent pulling fresh air in the room
nomofatum
Well-Known Member
You want to put your exhaust air as far away from your grow room as possible. You want it to mix with a bunch of other air before it can re-enter your grow space. In particular you want it to travel through your living space so it can pickup the CO2 that you are exhaling as we speak.
The bigger the recirculating circle you make with intake/exhaust the better. This is why I like going straight through the ceiling and out a floor vent in the room above. The air must mix with the entire upstairs and head down the stairs before going back into the grow room. If the intake air is to heat up at all the grow would have to heat the entire house up. If the humidity is going to climb, the whole houses humidity would need to climb. It gives you a very large buffer to handle heat and humidity issues. Heat can't climb fast or drop off too fast when you are circulating the whole house.
Gquebed
Well-Known Member
Im doing something similar... i draw fresh air into my tent from a window and exhaust from a tent into that same window. The two duct holes in that window are just inches apart. I know the exhaust is being drawn back in by the intake because the intake air is fairly warm even though it drops to -10 to -25c outside at night. I also know that the exhaust air is mixed with enough fresh air because the plants have shown no signs of co2 deprivation.
What i would worry about in doing this inside is that where the exhaust air is being mixed with "fresh" air will soon become completely stale too unless there is fresh outside air being brought in from somewhere. I have made this mistake already and it is tragic....
Signs of co2 deprivation look just like nute probs. So you chase around in circles trying to figure what the deficiency is and then you start flushing because you think it is lockout from salt build up and so on...but really it is as simple as just getting fresh air...