LeighMo wrote:
I've heard that, but I don't understand how she avoids pH crashes that way.
Don't biological processes use up all the KH in the tank in six months? Even
if you don't have a lot of fish, you still have bacteria, decaying leaves, etc.

Yes, but the plants use all of the nitrogen, so there's no oxides to form
acids with. Or something like that...

As for my tanks...I change at least 30% weekly. The fish seem to appreciate
it, even though my tanks are planted.

I can't picture changing that much water in my 110g tank. That's a lot of
water!

--
Victor M. Martinez | The University of Texas at Austin
| Department of Chemical Engineering
http://www.che.utexas.edu/~martiv | Austin, TX 78712
If we knew what we were doing it would not be called research, would it?