Yeah, I bet you pictured me (5'4") picking up a couple of 80 pound shepherds and tossing them in the water like someone might a robot cleaner

These dogs are very energetic swimmers and can really stir up the water with their long legs and webbed feet.

Aeration? No problem! Throw in a toy, have a dog jump in. Mega geysers result.

Dunno about algae: we haven't had any yet. But I can testify to them being excellent stirrer-uppers of dust and debris.