Italiano715 is right, CO2 is something for advanced growers and not noob's
like us (i've been growing for about 3 yrs now and i still don't use CO2).

also, CO2 enrichment in a micro-grow setting is a complete waste of time, effort
and money. not to mention that, as a new grower, you wouldn't know whether
the CO2 was doing anything useful or not as you don't have any harvests under
your belt without it it to compare to.

do yourself a favor and concentrate your efforts on learning the basic's first and
on learning to read your plants as they will tell you what they need if you only
know how to read the signs.

try not to resent what i'm saying either because if i wasn't trying to encourage you,
i'd just ignore you.

there's truth in the old adage that 'to give a man a fish is to feed him for a day,
to teach that man to fish is to feed him forever'.

my point is that once you have the knowledge, no-one can ever take it away
from you.