Iā??m telling you guys, 800 BTU's is NOTHING.. The cheapest air conditioner Wal-Mart sells is like 5000 BTU's.. A catalyst heater is not very efficient at generating heat but due to the catalytic process (vice combustion) it generates far more CO2 than just burning the gas.

Also remember that with CO2 you should be upping the grow room temp to 85F or so.. Which is probably more than the heater could do even if you wanted it to! I keep my grow'n room at 77F and when I shut the door to the closet and fire up my 1500BTU burner with no vent fan going it only gets up to the low to mid eighties. It gets to the same temp it would without the burner going (due to the lights) if I just shut the door to the closet.

It really sounds like nobody has ever heard of this before. I checked with most of the major burner companies and they are all using open flame.

I just checked the tracking on my atmospheric analyzer, its half way here. I am really just guess dosing right now, running burner for 10-15 minutes every four hours. Plant growth has responded quite nicely but Iā??m sure there could be other factors. Since I have been dosing over the last couple days plant growth has at least doubled (I keep having to move the lights). It could be other factors.. However, I hope when I get the analyzer in I can prove it isnā??t.

I will continue on and take pictures of the setup when I can find a digital camera to borrow. I expect to have some relatively conclusive data in the next week or two.