No, she'd been drinking the pond water for the last 5 years, her
problem was old age.
all the small birdies and our disgusting dog drink from it, dog just suffers from
bad breath.
With the sunlight and warm temperature increasing the algae will flurish,
we have a trickle feed system to our pond but we do a full change and gunk
clean-up 3-4 times a year.
We also found though once the water was changed our ducks took up to 2 weeks
before they started using it again.