Like most platies, mine occasionally pick at the algae that grows on my plants, but lately I've noticed something a little odd. Once a week, I do a 30 percent water change, net out whatever detritus has accumulated, and clean the glass. For the rest of the day, they go bananas and eat every speck of algae growing on the Java Fern and Anbuias. They go at it like little lawnmowers. By the end of the day, the tank is spotless, although they produce a lot of poop in the process! It's almost like they see me doing cleanup and decide to help, but I wonder if it's actually something in the water conditioner that makes them do this? Has anyone else experienced something similar?