I have a leisure bay spa that is about 3 years old and there are three fiber optic lights. All three cracked and started leaking. I took one out and tried to search the internet for replacements. They have a black back ring that secures the light housing to the shell and those were also broken. ANy suggestions about replacement parts or a better solution would be greatly appreiated. Also, why would they crack like that? We never run the temperature above 96.

Is this one pictured? or are there 2 notches on the edge of the clear lens?