I don't think they need any hole in the ice. I have hundreds of bullfrog
tadpoles in my farm pond. It gets frozen over solid for months in the
winter. The tadpoles do quite well and change to bullfrogs during
their second year.

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Ed J edj22 at attglobal dot net
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"Ka30P" wrote in message
...

Bullfrog tadpoles and some greenfrog tadpoles winter over in the pond,
just
like fish. They need a hole open in the ice.


kathy :-)
algae primer
http://hometown.aol.com/ka30p/myhomepage/garden.html