CO2 bottle, how many bubbles should there be on the counter?

Mike, it's quite important for you (and your fish) that you know the concentration of CO2 in your tank. To do this, you must have a means of measuring pH and KH (carbonate hardness). With these two measurements and the use of a chart http://www.csd.net/~cgadd/aqua/art_plant_co2chart.htm you can read off the CO2 concentration in your tank. You should be looking for 10-25ppm. The amount you need to bubble in depends on your filtration system and the amount of surface agitation you have, plus of course how much the plants are using.
I would guess with a 35 gall tank, 1 bubble every 2 seconds would be a reasonable place to start, but do the measurements first.

Paul Davies
"Mike" wrote in message ...
I just purchased a CO2 bottle with Bubble Counter, Reactor, Valves, etc
etc... I'm a bit of a newb when it comes to this because I've never owned
one before.
How many bubbles should I be seeing passing through the counter? What is a
safe amount without killing the fish? I have a 10lbs. bottle of CO2 and a
33 gallon tank. I know the bottle is kinda overkill but I got sick of
buying the co2 tabs.. I don't wanna kill my fish that I have in there right
now. I'm guessing the CO2 is regulated by how much I turn the knob on the
bottle?

Mike