CO2 and Reservoirs

[flyer81]

I am doing RDWC in a sealed room and am also supplementing CO2 using a tankless water heater. I know how important dissolved oxygen is when doing hydro. So I have an air pump and air stones sitting in the reservoir as well as in the bottom of each bucket.

Right now my air pump is outside of my grow room. This becomes a problem because my room is sealed. It increases the air pressure in the room and unfortunately the smell is now leaking out of the room.

I put the air pump outside of the room because I figured I would not want to pump CO2 into the reservoir. But is that really a problem? Would it matter much to have the air pump in the grow room even if it is CO2 enriched? Since CO2 is heavier than air should I just mount the air pump near the ceiling? Am I overthinking this?

 

[budleydoright]

I don't think I'd sweat it. It is only 1500parts per million of co2. Also don't forget the O in H2O is oxygen. I would be more concerned with water temp where DO is concerned.

My plants are in an enriched environment in COCO when the roots need oxygen, there's plenty.

 

[MrShpongle]

I don't think there's a problem with bubbling CO2 enriched air through your buckets. 1500 ppm of CO2 is still only 1.5% of the air, and there's plenty of O2 there anyway. I think the bigger issue will be your water temps as mentioned above. My air pumps are outside my grow room where they get 63 degree temps year-round. If they were in my grow room they'd be drawing in 80 degree air, and that would warm those buckets mighty quick.