Any good tips on how to help bring down water temps of 80 degrees.
The heat is on, here in OH-- the pond was at 78 degrees yesterday and 81
degrees today.

I've been misting the pond for 3 or 4 hours every evening and topping it
off with cold water every other day.

The pond is about 2200 gals. has a waterfall and is 2/3rds covered with
lilies, lettuce and water hyacinth. It has a 2 foot wide bridge over it
that offers some more shade.
So far the koi and goldfish seem Ok-- but we are expecting 3 more days
in the mid to high 90's and I'm getting worried.