I was just doing a mid-winter check of my skimmers and discovered several hairline cracks in them - very disappointing as they were just installed summer before last as part of a major remodel. I've always been careful to put a Gizmo in each skimmer when I winterize, and this winter they were nearly dry when I checked them because we have had very little precipitation. So what happened, and what should I do about it?

Are the cracks leaking or just cosmetic? If they're leaking and you had a contractor replace them check the warranty before you attempt any repairs.

Not sure if they are leaking or not as there is no water in them now and probably won't be until I open the pool in April. Nevertheless I will check with the contractor to see what he has to say.