Bill,Thanks a lot for both replys.I thought they gave me the wrong bags.On the secound post thanks.I just wanted another mind set on it.What is odd is that it didnt start happening untill I moved.After they were captives for 18 years.(which is another story altogether)I have a different kind of water here.Its loaded with calcium,the other was a deep well with a different Ph. and I could leave it running and it would be much warmer.I,ve already designed and built a small prototype of a pool with plastic over it like a little green house.I piped in hot water through a sprinkler.It stayed fairly steamy.Our winter was so mild this year I didnt build them around all 9 ponds.Some kind of large.It would be quite a construction project.I've drawn up away to use an hot water pressurewasher(I just happened to be a pressurwashing co.) that could supply warm water in a mist/flood to every pool.This way I wasnt running electric for each unit.Hot wires & H20,no,no.I was counting on globel warming!Never a dull moment,animals will always make you work.I dont want them to live "inspite of captivity" but try to get them to thrive because of it.Thanks again Vic

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