CJadamec
TFP Expert
Nice work on the crack, looks like you paid somebody to repair that.
As for the stains since you have a dry pool and its basically a boat hull in reverse you can try some of the marine hull cleaning products. Something like this which is an acid based cleaning designed to remove organic stains as well as rust and scale.
If you are left with residual stains in the gel coat after cleaning a cleaner wax like this can do wonders for a faded gel coat. For small areas you can apply it by hand but for a large area I would get a mechanical buffer pad. One word of caution about these products is that you can buff right thru the gel coat if you aren't careful. A cleaner wax has a polishing compound in it so it actually sands off the surface of the gel coat. Not sure if I would try and do the whole pool but I've seen entire boats done with the stuff and you can get an autobody like shine on gel coat with this stuff.
As for the stains since you have a dry pool and its basically a boat hull in reverse you can try some of the marine hull cleaning products. Something like this which is an acid based cleaning designed to remove organic stains as well as rust and scale.
If you are left with residual stains in the gel coat after cleaning a cleaner wax like this can do wonders for a faded gel coat. For small areas you can apply it by hand but for a large area I would get a mechanical buffer pad. One word of caution about these products is that you can buff right thru the gel coat if you aren't careful. A cleaner wax has a polishing compound in it so it actually sands off the surface of the gel coat. Not sure if I would try and do the whole pool but I've seen entire boats done with the stuff and you can get an autobody like shine on gel coat with this stuff.