PRC
Stop Quoting Me!
I hate to burst your bubble, but I've had the black ones break from the salt, and they were only holding a filter sock in the sump.
That's because you used a "shit" tie strap...You're talking to a guy who knows more about tie straps then should be humanly possible. So my bubble is not burst.
White tie straps break in sunlight, I assume that the closest thing to sunlight is our tank lights. There is no reason to take the risk.
The reason I know this? White tie straps cost me well over $2,000 in service calls about a decade ago. The unltraviolet light from the sun breaks them. Period, end of story, case closed.