In our 25 gallon Solana rimless glass tank, the back wall is made of black textured plastic. This looks cool when it is new, but it's really hard to get algae (coralline and green hair) off of the back wall. For anyone who has ever had a Solana tank, what's the best way to clean the back wall? I've tried using the rough edge of the back of a sponge, without success. Have also tried a metal algae scraper, which was not much better.