Pool is about a month old. SWG vinyl inground. Our coping and decking is all engineered flagstone manufactured by a company called StoneLink. In any case, we have noticed little holes in the coping all around the pool. Could this be caused by the salt in the water? The company that manufactures it advised that it is safe for salt pools, but I can't help but think it must be causing it. Anyone know what can be used for a good sealer?