I just got 2 LED
strips 14" long from walmart made for an auto interior. 11.99 ea. 12 LEDS blue (470 nm) ea. 1 - 12 v adapter from my basement. 2.99 for a 5 k
pot and knob radio shack. I placed one strip on each side of 125 gal
., one inch below water line. (remember they are on the exterior of the tank). Used 4 suction cups with little hooks to hang them (50 cents ea, also walmart. girlfriend came up with this idea!). Pointed the LED
array up at 50 degrees from horizontal. The 470 nm light shines thru the acrylic and up to the surface of the water and reflects back down. I found this to give me a great wave movement shimmer thru the tank and I can bounce the light of the surface and get the lighting just right by turning the angle.
That is a grand total 29 dollar investment. 6 wire ends striped, a little spit (for the suction cups) and I am done.
With the dimmer turned all the way up, you can see a blue highlight even with the PC
These little LEDs are bright and wide angle.
Hope this helps.