Eigendlich everything has been said in the headline !!!! The water filter has many uses. Where the sprinkler was on our 60l Aquarium too violent, the poor fish are caught in a flash flood ;-) We let the water with an air mixture into the water surface. Cleaning, etc. is done with a few simple steps: Punpe out of the water. Clack clack from the upper and lower lid. All things Rinse clean impeller, mating back inside. Pump in less than 5 min clean !!!! The water is always crystal clear in regelmäsiger pump cleaning. Super part !!!