I only use the auto fish feeder with New Life Spectrum sinking pellets when I go on prolonged family vacations. But each time I do this, I notice algae growth in display. This is probably due to over feeding, uneaten food in the overflow, etc. When I get the feeding ring set up, I'll need to cut an opening in my cover and start using flakes instead. Im starting grad school next week, so Im going to have less time for everything...Vacation time? Or just moving towards being lazier faster?