My nautilus broke and while I had to wait almost two months for parts I kind of let dirt just settle on the floor. I went and bought a pool vacuum and was able to vacuum leaves and some Other stuff but it seems like the dirt has bonded to the gunite. I’ve brushed and brushed and brushed and it just doesn’t seem to want to brush up. It’s not algae and I’ve finally got my nautilus put back together but it doesn’t seem to get the dirt or whatever. Anyone ever have this issue or a fix?