jan - I vote for less often. I do one cleaning of my filter pads every
spring.


"~ jan" wrote in message
...
I'm seriously thinking of changing my lily pond pre-filter to be similar
to
my koi pond's. I've been more lax than year's past cleaning my pre-filter
on the koi pond. I will be cleaning it tomorrow, but I've only done it a
couple of times this year, and I run all year around.

The lily pond though I've had to clean about every 1.5 months, as DS did a
different design. It has less fish, as in the equivalent of 1 to 9 to the
koi pond. It is easier to clean, so I will have to give this some thought.
Easier versus less often. ;-) What would you do? ~ jan
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Zone 7a, SE Washington State
Ponds: www.jjspond.us