Submerged light bulbs
> From: JOlson8590 at aol_com
> Jan mentions seeing incandescent bulbs partly submerged. That brought back
> memories! :-) An old friend of mine ran a "fish store" out of his basement
> way back when I was an Undergraduate. He heated and lit all of his tanks with
> ordinary 40 to 100 watt frosted incandescent bulbs. I remember he had an A.
> fenestralis blooming under the bulb, also a C. griffithii blooming. He was a
> Botany Prof. The bulbs literally last forever, because they never get hot.
> No, he was never shocked, but he was a careful man! Anyway, it DOES work,
> and quite well, too!
Another advantage is that you don't lose light intensity due to
distance and reflection from the air/water boundary.
As for heating, you may large temp swings if you turn the lights off
during the night.
Again, I do not recommend anyone to do this. Although personally I
would not have a problem with doing it myself.