im not so much worried about too much current as much as my filter not
being able to handle it. seems to do ok with the 750 but was designed
for a 550! i pretty much made up my mind on going with the mag pump
though.

about prefiltering, your ideas sound like they would work good.
could i cut out a peice of normal filter material that holds bacteria
in external filters and just place it over the pumps intake? or would
covering the entire pump be necessary.

On Wed, 8 Mar 2006 00:18:32 -0600, "Koi-Lo"
wrote:


I have a 500gph on my smallest 150g pond. It works great - it filters as
well as runs the small waterfall. It filters because I set it in a plant
basket and wrapped plastic window screen around it. Nice, cheap, easy to
hose clean and the impeller is protected from trash.