[Ron99]

Originally Posted by RuGlu6

http://www.youtube.com/watch?v=8Z5l7...ayer_embedded#
Above is the video of LED lited SPS tank. He's got 3 ballasts so looks like 3 LED strips.

here is the store that sells them.

http://www.fish-street.com/weipro_led_lighting_led-c
Could it work for a Nano or a small cube tank ?

I would say no. It says it's 180 LEDs and 21 watts so regular 5mm LEDs probably putting out very little PAR. Also, lifespan of those types of LEDs is iffy as they are very difficult to cool effectively. The tank in the video looks like it has T8s or something as well in addition to the LEDs.