I have a 21,000 gal pool, built in 1987, I drained and acid wash washed once in 1999 and just drained it again for some surface repairs. I need to make some patches to the plaster, attached are several pics. There are four issues, 1) chunks missing - I have three or four of these spots and was planning on repairing with epoxy or EZ Patch, thoughts on this and if there is a better material. The surface around these is solid and thick 2) I have several Problem Spots that have a slightly different tint and seems to be wearing more and is more porous then the surrounding area 3) there a few areas that it looks like the original coating was thin and is wearing thru - not sure there is a fix for this but wondering if these areas could be skimmed with a product to fill in the thin spots and add some thickness to the overall area. 4) on two small area on the steps there are small stains that I think came from steel wool that fell into that area years ago. I will send pic in seperate post. 5) There is a graying, particularly on the sides which I was planning on doing a light acid wash, maybe 1 to 4 mix to see if that gets this. But not sure if I should do this as I know it wears the surface. See the overall pic in the next post for this issue
Overall the pool surface is solid and has worn very well and i am not looking to resurface. Also not playing for the perfect solution which would likely be to resurface but a good workable solution to extend the life of the surface.
Any thoughts on the above or suggested materials to use would be greatly appreciated. thanks in advance