I must say i was near tears last night when i discovered several calcium nodules on the wall in the deep end of my pool off the sun deck. I didn’t know what it was and brushed it off and air bubbles came out of both. I see a lot of white spots on the pool surface which appears to be the beginning of the nodules….I have looked up a lot of info and the only solution i see is putting clear epoxy over the cracks; there are already 3 cracks. I got this surface because it was suppose to last 20-25 years. It was really a pain with all the muratic acid start up!! But anyway, we have taken care of it perfectly and the chemistry is perfect. I would hate to have to have this redone again, and the expense!!! Any ideas??? I am still under warranty if i can ge the folks but honestly, i don’t see a good solution!!! Any ideas would be appreciated!!