Great exchange, guys! I love this site.
Going back to the original question..keep runoff from the chicken coop away from your pond, period. No control over how much, or when, leads to problems. Want fertilizer? You add it, when the pond needs, and the quantity needed, and specific ratios you need.
Know what the white stuff in chicken waste is? More chicken waste. That stuff is "hot", and can create serious problems quickly with a pond.
Several years ago there was a problem in east Texas, with chicken farmers spreading chicken litter over their property. Trouble was, manure had small amounts of arsenic in it, and arsenic was collecting in soils. Arsenic was placed in chicken feed, for a specific purpose, but passed straight through the feathered creature, with waste, then onto soils.
Stay away from chicken house waste. Make sure the neighbor stays neighborly.
