Originally Posted by MoneyMitch
with diy setup your going to have a hard hard time getting 30ppm co2 and at a constant level. forget the dropchecker and the diy co2 IMO. with co2 you need a lot higher lighting and a lot more/stronger ferts. co2 is not at all for anyone new into plants or aquariums for that matter.
there are many risks with diy co2 including but not limited to - back siphoning, fish death (too much co2) insane algae outbreaks that occur within a day or 2 and many many other things.
if your wanting to go co2 get a reliable regulator and bubble counter with a quality needle valve. diffusion is most important with any co2 method air stone bubbling out co2 is going to be about as bad as you can get (no offence) I would lookinto inline reactors or possibly a powerhead diffusion method. of course theres always the glass diffusion method with the ceramic discs.
personally if I were you I would skip the diy and stay with lowtech plants.
if you want to add carbon source to the tank look at excel its about 4-5x faster then natural co2 while pressurized is about 10-15x. but then again excel is not highly recommended as ive had it melt more then a few plants in my tank. not to mention the active ingredient is used in medical tool sterilization, embalming barnicale cleaning from ship hulls any many other extreme tasks.
thought id bring this up once more since it seemed it was totally ignored