I have had problems with the filters on my pumps getting
clogged up. I was always having to rinse them out.
I remedy this by the following.
You need a plant basket and a Washable Re-Useable Furance filter.
You can find these at Home Depot or Walmart at the pond supplies section.


 

Cut a section of the filter and put along the bottom
and sides of the basket.
Place your pump in the middle.

 
 
Cut a section of the filter so that it fits evenly on the top.
Don't forget to cut a small hole to fit your pipe through the top.

I only have to rinse my though every 3 months or a little longer.
I replace the filter yearly when spring cleaning.