I have already used the same pump system to fill a 3 acre pond (filled it this spring). I am planning to stock when the weather cools off and will be sterilizing it first.

Note: I have stocked nothing...the pond is only 3 months old....it has beds in it already. I have not seen any of the fish that made them, but I'm sure they are fish beds....so these jokers can make it through the pump....and those had to come in as larger fish to be bedding already.

I didn�t worry about screening on this first pond because I have plenty of run-off to keep it full....I was just looking to get it full and get my PH and turbidity in check before a fall stocking.

BOBAD - I was thinking about a gravel/sand type filter as being the only thing that would handle the volume of water flow needed and have a chance to work.

I did find some "socks" at an online store but they appear to be used to keep larger debris out of submersible pumps...not so much intended for small fish (or fertilized eggs).

So, I guess right now, I'm scheming in my head to use these socks on each end - then a gravel/sand pit that will feed vertically back up a "U" fitting and into the pond (to try to keep the sand in place). I don't think I could go with a long "grassy stream" because of steep banks around my pond....the water would just flow too fast.

I wonder if running the water through a BIG tankless hot water heater could work? Would one of those make the water hot enough to kill off anything living in the water?

"Many men go fishing all of their lives without knowing that it is not the fish they are after." - Henry David Thoreau