PDA

View Full Version : Propane heater serving two purposes?



timkva
05-25-2009, 07:11 PM
I've done some research on less expensive ways to produce more co2. One of the ways I've found is to use propane. I have a 12x12 greenhouse with a hydroponic setup inside. I use a propane heater when the temp gets near danger cold. If I used this nightly at a very low setting, would it give me any noticeable boost in my co2?

Henry S
06-01-2009, 10:31 AM
if the room is properly sealed, you should see a kick in co2. its hard to say how much, but a co2 test kit will confirm. http://www.bghydro.com/BGH/itemdesc.asp?ic=ACO2DETK&eq=&Tp=

Aeroman
06-22-2009, 11:15 AM
Burning propane produces water and Carbon Dioxide. Per 1 Gal. Propane 0.81 Gal. water is produced and 0.19 Gal. CO2.

CH4 + 2O2 => CO2 + 2H2O + Heat

However to get any benefit from added CO2 you need to have optimal lighting, that being about 8000 Lu/ft2

For your refrence bright sunlight is about 2000 Lu/ft2

Sicerelli
02-19-2010, 10:45 PM
So to use any increased levels of co2 the plants need 4x the light of "bright sunlight"? or did you mean 800 Aeroman?

Unregistered
03-22-2010, 05:15 PM
So to use any increased levels of co2 the plants need 4x the light of "bright sunlight"? or did you mean 800 Aeroman?

Yes 4x sunlight. CO2 if used properly will increase yield, density and speed of growth. But in order to achieve that you have to give them more of everything else. In other words - to get 30% faster growth you'll need 30% more nutes, water and light to keep the plants happy. And usually folks suggest raising the temp a few degrees with CO2 as well.