Mr GTV wrote:
No I mean mm (milimetres). Gravel pieces 2cm diameter are called stones!
Steve

I meant for the other measurements. A total of 14-19 centimeters of substrate?
That's huge!

--
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?