Thanks again for all the input folks.
The die-off continues, as each day we're out there (we live about an hour away but while we're building are out there 3-4 days a week) there seem to be 5 or so fish floating on the surface. The tadpoles seem to make quick work of the carcasses so we're probaly not seeing all the fatalities.
I did see at least 3 live fish yesterday so hopefully some will be able to spawn. The tadpoles, frogs, and salamanders continue to do well, though I saw another dead salamander in there the other day.
