you shouldn't have your regulator turned up to 10. It should have come with some kind of graph which tells you to take the size of the room then it tells you how many minutes it takes at a certain level to get to the desired ppm of co2 in the room. Mine is about 1700 cubic feet (LxWxH) and I run mine at level 3 for 30 min every three hours. I bought a digital timer from Home Depot and it turns it on and off for me. Yes, kick ass.