I just finished testing the water.

KH is at 0 (is that good) pH is lower than 6.0 (so it would seem) as the
sample turned a dark yellow. I decided to test my GH while I was at it
and
that turned out to be 3-4.

I havent had time to check out Chucks chart but I will do that ASAP.

~Mort


According to Chuck's page, CO2 is calculated like this:

CO2 (in PPM) = 3 * KH * 10^(pH-7)

if your KH is really 0, then you have no buffering capacity
and your CO2 will be very low (I doubt it's actually 0).
Anyway, you may want to increase your buffering capacity.

-coelacanth