The light in our pool came off sometime during the winter. It was dangling in the water when we opened up the cover. Water is green so I can't easily put it back on until it clears up. We had a leak in our light niche a few years ago so I'm worried that the high chlorine levels could degrade the butyl tape and pool putty that was used to plug the leak. Is this a valid concern or should it be okay since chlorinated water gets behind the light anyway?