zozo
Member
. . . . I can't remember where I read it, but they apparently also maintain higher levels of CO2 in their greenhouse than standard atmospheric levels.
That's why the old Greenhouse natural gas heaters exhaust in the greenhouse and not via a pipe through the roof. The pipe through the roof would be a waste of precious CO². A clean natural gas combustion results in pure CO².
A professional big boy
A smaller one for home use.
I remember the old days when we all still had a water heater with a permanent pilot flame in the bathroom.
Back then for decades up till the mid-1990 pretty common in households, it takes the needed combustion air from the room and exhausts CO² into the same room. We had a fern in the bathroom that grew 10 x faster than the same fern in the living room. Much later I realized it must have been the darn little pilot flame giving the plant extra CO² 24/7.
I actually played with the idea to create a container with a pilot flame and an air pump to provide extra CO² to the aquarium. But till now it's just a concept idea i never really tried. I'm not sure if there is more in the exhaust than only clean CO² ending up in the water column. .