Cruising through the fish tank section of my local pet store (PetSmart) hubby saw this really cool tool. I didn't save the card to it, so I don't know who makes it, sorry Anyway - it is a tank scraper. It has a metal scraper with a light weight handle. You have a choice of a long handle or short handle. It really works in scraping off the salt build up on the glass of the tank. I have a bubbler in the salt pool in both of my tanks. The build up of salt residue on the glass was getting annoying and it was really hard to get if off while the hermies were still in the tank (vinegar does the trick when doing a deep clean and all hermies taken out). With one swipe, the salt was off.