CO2 Systems

I see everyone recommending CO2 systems but all the one's I find seem to costs hundreds of dollars.

How much should a CO2 setup cost for a small closet grow?

For a cheap get up with small tank $250-$300

For real or for fake?

Controller ~$400
Tank/Reg/Valve ~$150-$200

scrapping the controller, you might as well guess at the temp, nutes, and pH also.


Now on the cheap, vinegar/baking soda or sugar/yeast methods produce CO. (BornToKillSpam has a *killer* post on the yeast method) but of course its all uncontrolled. TONS of posts about it. do a search.