fish gone fishy heaven :( ....any fish pond people?

[Cbr1k]

Also get a bit of Lysofoss in there to help keep the Algae under controll.

[Zen]

I used to have a pond with goldfish and had "Oxygen Weed" (aka Vallisneria) in it plus the pump and filter. Never had problems with fish dying even during hot months. Goodluck