My friend just bought a hot tub with a small crack in the acrylic shell. The tub was dropped and it cracked on a previous delivery. He got it for a great deal. The crack is on the outside of the spa, so it won't leak, and it's on the corner over the lip where it meets the skirt. It's a very small crack and it should be concealed by the cover skirt, but he's concerned about it getting bigger over time.
Couple questions:
Will this get larger over time and ever affect the shell integrity?
Can anyone recommend a good repair kit, or service?
I'm located in MA.