In my set up is it possible to add too much co2 in 3 minutes? I mean what if I accidently went to 3000 or 4000 ppm. That wouldn't hurt the plants would it? I think I remember reading that plants can easily tolerate 20,000 ppm, but it won't help any extra above 2000, but I'm not sure. Maybe it was a dream. Now aaron has me a little worried. Maybe I'll start with 1 minute and work my way up to 3.