Lee, I would be really interested to know how much it cost if you don't mind, and obviously how long it has lasted....... I only want to control temp through the winter to a bare minuimum of approx 12-13 degrees so that koi are 'safe' and can still be fed........ can you share any more info at the moment ?
thanks
Carl
ps.... did you have to change boiler jets as well ?
fish in pond
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