[villagetinker]

I hope the abrasive cleaners did not scratch the fiberglass, or you may have a much bigger problem keeping the shower clean. I made a mistake years ago with a very abrasive cleaner, and ended up with a patch that would get dirty faster then the rest of the tub. I found a really good coating for fiberglass (from a boat store) that I was able to use to reglaze the tub. Sorry I do not recall any details about the coating, too long ago.