You know what I have recently discovered for cleaning my bathroom and random black marks is the ..... Mr.Clean Magic Eraser!! I'm like addicted to it! Of course it goes no where near my tanks but I'm a bit of a cleaning nerd and discovering the eraser really made my day!! Not that any of you really wanted to know that but I thought I would share......
Achase don't underestimate our cleaning nerdiness!!! Those magic erasers are well just plain old bad ass, excuse my french, haha they remove everything and anything!!
I use my mag cleaner as a scrubber without the magnet. If you use circular motions it picks up algae real good and you can rinse it off and not release the algae back into the tank..