Hello, I have a 1950s concrete pool that was covered in fiberglass in the early 2000s and has a white coating. We bought this house in 2020 and it's our first pool. I noticed a couple of years ago that the coating seemed to be wearing down. Last year we weren't able to open the pool due to finances, but we are back on our feet now and want to clean up our swamp of a thousand frogs. My husband wants to drain it and start fresh, and so we are going to do some work on it while we have it empty. We don't have a huge budget so we would like something we can do ourselves but that will last a good amount of years. My husband and I are meticulous, so I'm hoping there is a doable option for us to refinish or coat our pool with something. I've heard gel coat, but then I see some say it only lasts a year, others say 10 years, so not sure where to even begin. Is a gel coat the same as an apoxy? Am I able to purchase these things without a license? We're also replacing the tile as it was leaking and breaking off, is there a recommended pool grout as well? All help is really appreciated.