I'd love that! I live in the Houston metro area--very hot in
summer. Do you think they'd live in shallow pools here? I'm afraid
it would get too hot.
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I live in the Nashville area of TN and we get some wicked heat here in
summer. I shade these small pools with water lettuce, water hyacinth
and small water lilies. The fish will hide under them where the
water is a few degrees cooler. If the water reaches 90F I cover them
with old curtains. Heat can be a problem, there is no doubt, but I've
had the fish live through a heat wave where the water temps reached
94F! I do have small pumps and filters running in each pool. They
aerate the water which helps. Goldfish and koi are amazingly
adaptable.
You can always grow some type shrub or a small tree on the south side
of the pool and or add water lettuce etc as I do to help hold the
water temperature down.

I was thinking of that. I have some trees and shrubs I need to plant--I'll
place them accordingly.
Thanks!

Cindy