At 11:19 PM 2/4/1998 -0800, you wrote: >Ed wrote: >>Steve--Tim Hovanec of Marineland wrote an article in TFH (I think) about >>a year or so ago about biological filtration Tim did a great series of articles on water and filtration for AFM. Maybe he can get permission to post them on the net. You might ask him.... - -- Dave Gomberg mailto:gomberg@wcf.com FormMaestro <http://www.wcf.com> Stop SPAM! <http://www.cco.caltech.edu/~cbrown/BL/> Join CAUCE <http://www.cauce.org> - -----------------------