Vinyl pool 18x36 25k gallon Wisconsin
Noticed some hairline cracks that go from the tile area to just below the water line. Any suggestions, just possibly try to fill a bit with silicone or this may be more serious?
Pool was built in 1984. Liner was replaced about 13 years ago and does not go all the way up to top of pool, liner goes up to only a certain point as you can see in the 2nd picture.