The Visual Encyclopedia
Showing posts with label sand. Show all posts
Showing posts with label sand. Show all posts
Saturday, July 3, 2010
Sunday, July 29, 2007
Diagram of a Deep Sand Bed
A Deep Sand bed is used in marine and reef aquariums to naturally lower nitrate levels.
http://www.iagram.com/dsbref.html
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About Me
- Shawn Mackey
- Edmonton, Alberta, Canada
- I am a after-degree Education student at the University of Alberta,