I need Co2 , but what is the best kit?

I am building my new flower room it is 5x7x7 It will have a 600 hps and 200 watts of cfl's. It has a aircooled reflector hooked to a 800cfm furnace fan. the room is SEALED. and has a A/C in the window to keep it cool, oil heater in the corner for heat. I also have a Humidifyer and dehumidafyer.

I did just vent outside air though my room, but now that it is sealed air tight. I need to inject co2 into the room. I am useing suger and yeast in five gallon buckets but that does not produce enogh co2 .

i heard the natual air has 400ppm and cannabis likes upto 1500 ppm, I was thinking split the diferance. with 900-1000ppm co2.

I was thinking getting a big Tank with co2 and a regulater. but am open to other ideas too.

Get a controller and a regulator. the controller will keep your ppm between your desired setpoints or typically 1200-1500.

Co2 boost bucket's are your best bet work awesome!!!! jack

IDK if it would produce enuf or if it would screw up. The oil heater u said u had it has a flame? Just having it on in ur grow room would increase ur CO2 levels as well I just don't know how much and if that would end up like I said screwing up the temp levels in ur room. Fire burns oxygen and gives off CO2.