So, I need to know whether utilizing carbonated water/seltzer water actually does anything to significantly increase yield? I'm in a room approx 7x8x10. Same goes w/ 'The Yeast Method'? I'm short on funds at the current time and am looking, as are most peops, for an efficient and economic way to get CO2 to my plants. Also, if I were going to use a 70lb bottle, does anyone have any insight as to how long the tank will last if ran at the appropriate 1800ppm in a room this size. When using a tank, what kind of measuring device is used? I assume it is not as expensive as the monitors used w/ a propane burner...or is it the essentially the same device? Or....wishful thinking... if anyone know where you can get a CO2 producing device that is similar to a propane burner for less than $250, let me know. I appreciate everyone's insight.

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