"RussellinMD" wrote in message
om...
I live in Maryland and my pond is about 5 years old. Last summer I
had to clean the pump filters once a month as they would get so
clogged the water falls would stop. I replaced the UV bulb last
summer and have inserted new filters with no improvement. What can I
do to prevent this from re-occuring this year?

Convert to a VF pond.

BV.
Ducks and runs for cover.