You may want to run some tests on the water to make sure there are enough of
the right nutrients for pond plants. I have to add Potassium to my ponds or
the plants come to a standstill.

Interesting, never thought of that. My plants are not at a standstill
but they could grow faster - in my opinion (watching grass grow). As
long as the potassium does not cost an arm and leg for a 100,000 gal
pond. Time to look into it.

Thanks, Rick