The sun as light source
I know that this is old information, but i cant help getting excited every time i read about it, and like all others to see it as well.
If this don’t kill the myth about the sun causing algea then nothing will.
http://www.trebol-a.com/2006/02/04/outside-tank-article/
http://www.trebol-a.com/photos/album/acuario/
http://www.aquaticplantcentral.com/forumapc/aquascaping/5018-my-sunny-tank-in-the-street.html