Thought I would post these links by Bob Fenner for taking or improving your tank photos.

Part 1: http://www.wetwebmedia.com/aqfotography.htm

Part 2: http://www.wetwebmedia.com/aqfotopt2.htm

Part 3: http://www.wetwebmedia.com/aqfotopt3.htm

Another article explaining the basics of photography pertaining to aquariums in particular:

http://www.wetwebmedia.com/ca/volume...hotography.htm