Underwater Led Fishing Lights

Have you ever made underwater fish pond lights yourself, HOW ?
I refuse to spend 80 dollars or more on little 12 volt LED lamps or other types. What about LED lamps in water-tight containers, SELF made? Has anyone here done it, and what problems did you encounter? The solutions?
Thanks. My goldfish pond is 3 feet deep in the middle, and maybe 6′ x 8′ rectangle. 33 fish. Some babies every Spring.
POND LADY.. we are talking about 12 volts here, milliamperes. NOT dangerous. You have given me bad advice in the past..
http://answers.yahoo.com/question/index;_ylt=Aly7pXRsX.BwRJHq.sSlVwvty6IX;_ylv=3?qid=20090617012001AAEzfH2
all I needed was a NEW UV lamp.
Something you could look at is LED rope lighting. It is a string of LED’s inside of rubber tubing so the bulbs and wires are sealed from the elements and your connections can be on the surface. You can get them in different lengths and colors. I bought a bunch from Home Depot after Christmas for $15 each for 18 foot long strings.
DeepSea Power & Light – Installation of 12 LED On-Hull SeaLites®