I forwarded your post to jan.
She has an indoor pond.

Oh good, I found the right post. Been very busy this week, relatives and
graduation on Friday, relatives Saturday afternoon/evening and koi club on
Sunday. Any in between time and I was working in the yard. I am SO stiff
and sore this morning. ~ jan

See my ponds and filter design:
http://users.owt.com/jjspond/

~Keep 'em Wet!~
Tri-Cities WA Zone 7a
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