Chris Herring wrote:
...
(1) The pool is situated under a number of deciduous trees ...

We use three big nets made from shade fabric (available at Home Depot,
etc.) supported by pvc pipes (nets have "pockets" sewn into each edge
and pipe runs through those pockets and is joined with PVC joints at
each corner and in center of two opposing sides for support). The leaves
can be dumped or blown off the nets. We also use these nets in the
spring for shading the pond as the sun begins to encourage the pea green
algae to grow.

(2) The pool is surrounded by a concrete patio ...

Use the concrete rubble to build up a waterfall area? turn it over and
make stepping stones around pond? build up a wall area at one end of
pond to support a second pond? lots of different ways to reuse this
material.

Sounds like a great project -- can't wait to see your progress next
spring. (P.S. while are you the "frog killer"?)
--
Kathy B, zookeeper
3500gal pond, 13 pond piggies
Oregon, Zone 6