rust removal

Hey all, Im back again with a question. My facility is going on 60 years old with original tile flooring, it has aged poorly through its years and has a large buildup of calcium and rust stains. My initial thought was to acid wash with a 4:1 ratio but the results haven't been as good as i...

The liner on my pool has been dropping pieces of rust into the water that are sharp and small. I have tried to vacuum them countless times and they are spread all over the floor of the pool. We covered up the rusted liner but it keeps deteriorating. They are so hard to get rid of does anyone...

Unfortunately some nails got in my pool that I didn’t notice that have caused rust spots from the roofers. I used the vitamin C sock method on some BUT this won’t work for those near the jets. i also have some deeper rust spots on the floor that are larger spots. Any suggestions on removing the...