"Bob Alston" wrote in message
.. .
Rather than continuing to add CO2 until you get perling, suggest you use
the
calculator on the attached.

http://www.csd.net/~cgadd/aqua/art_plant_co2chart.htm

Lots of reasons why even with appropriate co2 you might not get perling.


Good advice. I refer to CGadd's site frequently. I just always seem to have
trouble nailing down co2 readings and am really wary with the fish involved.
In my plants only tank I didn't worry too much about it, just set bubble
rate for good growth rate. Thanks.
--
Paul

"You can make it foolproof, but you can't make it Damned foolproof."