Hi EE gurus, I came across a small problem. The lighting system in the pool of the new h= ouse seems to be broken. It is a high brightness bulb and fiber optic fiber= s to light the pool without electricity in the water. The illuminator is a = GE Arcstream 4000K 150W that provide 11500 Lumen into the fiber. The bulb is fairly small,about 21mm diameter and 88mm long including the so= cket. https://www.1000bulbs.com/product/57189/MHS-015088655.html I am not sure what is broken of the bulb or the starting system. Can I replace this with LED equivalent? Jean-Paul N1JPL --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .