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[alec]

I am intrested in grtting a large outdoor pond and i am intrested in ways of heating it is solar an option :?
solar would be the most conviniet but would it be warm enough in winter :?:

i would like to get large tropical fish like a silver arowana but from what i know arowanas rely on very warm waters around 28'c

maybe a saratoga would be better

cheers alec