Hey guys, just wanted your opinion. So before leaving for work this morning, I noticed my algae eater twisting/twirling in the water, he did it a couple times. He was doing it next to a rock so I don't know if he was itching... or what. But I fed my fish maybe 10 mins before he started doing this... I don't know if that has anything to do with it. Is this normal or should I be worried?