I was reading about your marine tank experiments. I'm not completely familiar with marine or reef tanks, but a friend of mine is VERY much into them. It looked like you were using macroalgae. I recently came across a site about doing a "planted" marine tank using sea grasses. I was wondering if you were experimenting with anything like that. I could imagine such a tank looking quite beautiful!
http://home.comcast.net/~slardizabal/
http://home.comcast.net/~slardizabal/