In article ,
Hmmm. I dunno. My plants use all the nitrogen, but the pH still drifts down

So are you saying you can't measure nitrates in your tank? If so, what's the
reasoning behind periodic water changes?

each week. I wonder what KH she starts out with, and what's left after six
months?

I can't recall if she mentiones that in the book.


water changes if I lived in the west, where drought is a constant problem.


I have a pithon too, and it makes things easier. I just don't like the waste
of water.
BTW, my tank just finished cycling and not it's reading zero nitrates! Is
it the plants?


--
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?