Hello D,
You are absolutely right. Some people maintain their pond - many don't. This includes all types of ponds and all types of pond owners. There are many businesses around the country that make a good living just servicing ponds for people.
As a manufacturer, and retailer of pond and water feature systems all we can do is design the best products we can, teach the customers how to properly use them, and do our best to provide outstanding customer service to them over the life of their pond. We teach them the importance of regular servicing and maintainence - if they can't or don't want to do it on their own - we recommend hiring a service company to do it for them.
Jiffy-Lube is extremely poplular because they perform a service that the majority of us don't want to do. Maybe someone should come up with a Jiffy-Backflush for the pond industry.
Sincerely,
John Russell