By Bloomberg Rankings -
2012-08-22T16:10:13Z
The Sun and the Moon
In July, the Japanese Space Agency did something a bit unusual -- it sent fish to the International Space Station. The aquarium there simulates day and night with LED lighting so that the fish don't go crazy. Fish in land-based aquariums also need LED lights that can mimic the shimmer of sun -- as well as shadows. The lights also help coral to grow. LEDs last for 50,000 hours -- about 15 years -- enough to let slow-growing coral add 3 inches during that period.
$1,500: two 18-inch Acan Lighting 600 Series Prism LED Lighting Fixtures
Running Tally: $4,697
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