For three years I never had to clean out my Sea Strainers, but just 10 min' in a swimming hole area and that is all she wrote. Damn Hydrilla seaweed is like moldy grass. Does a great job on strainers. I removed a quart of boogers and grass out of it. WOW.
All is well now, just need to pay more attention to swim holes and party coves where it is floating about 2 feet down.