Hey everyone, I use a commercial pool for underwater hockey.

This pool is nice but old, it is currently tiled with 1x1 tiles.
Question one--Will using underwater epoxy allow me to glue some tiles that have come loose back in place (in water repair)

Question 2: Can one use regular thinset and grout for underwater pool tiles.
#3: Can standard glazed ceramic tiles be used successfully underwater?
#4 What would one use to repair "rotten" looking cement and or cracks underneath said tiles.

Thanks Kevin