What is your freeze line (How far down does it freeze in your area)? Your
pond is about the same depth as mine and Long Island is considerably warmer
than your area.

wrote in message
...
how big (gallons) is your pond?
what is your filter setup?
what are your water parameters?
what did you use to keep a hole in the ice?
Ingrid

(ROMERO) wrote:
I had the same problem, I had all my Kois died, 21 of them. I have them
for 7 years. I livee in Illinois and we had an awful winter, the ice on
the pond was
very thick. I never had this problem before. also the water just turn
very green, any
idea???. May be I should empty the whole pond. By the way the pond is
about 3.5
feet deep.
Thank you.
Cesar