I've had my algae eaters for over 2 years now, and lately I've noticed that they are less effective. It's seems like their just not as hungry anymore and I plan to buy them some algae eating friends to help them.
Anyone have any suggestions about great algae eaters? The tank is 600 l, and they would share it with the old algae eaters and cardinals, guppies, red wagtail platy and tuxedo platy. pH is 6,0-6,5.