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What would be the lowest water temperature survivable by eitherKoi or Goldfish?
Derek Broughton wrote:
Gill, there's no such thing as a pond in England that can't support "Koi or Goldfish" - if you want to get into some of the fancier goldfish, it might get dicey, but comets are going to be fine. There are good reasons to go deep when raising koi, but it's not for the temperature. It was the actual depth and size of the pond that I was seeing as the limiting factor here.....but of course, I'll also have to bear that in mind if I go for the goldies to make sure that they have adequate space to grow and move about..... I have an area of the garden that would make a great Koi pond....problem is that it currently houses the kid's outdoor play stuff and they will fight me tooth and nail to keep the stuff for now - lol.....but there is plenty of time when they grow out of it for digging my Koi pond.... Where's your frost line? In Ottawa, Ontario, one of our regulars did fine with an 18" deep pond. The frost line there is well below 3' & weeks of -20C temperatures are expected most winters. Koi & comets did fine in my Ontario pond (which did reach 5') with 2' of ice on it. That is interesting to know....our winters are nowhere near as severe as the ones that you get in Canada.....I'm not sure exactly where the frost line actually is and can only go on how deep I need to dig the garden to get past the frozen soil - which IIRC is around 6" when the frosts are at their worst....not that I make a habit of going out and digging the garden in sub-zero temps too much :-) If it's liquid, they can survive. If it freezes solid, there are some (possibly apocryphal) stories of goldfish surviving. Far more important than the temperature is getting some oxygen in their when there's ice on the surface for extended periods. Thanks Gill |
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