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Overwintering fancy goldfish in Chch


jordan

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I have read a bit about people with goldfish in the UK having there ponds completely ice over for weeks with no problems. As the water gets cooler they start to slow right down and pretty much hibernate, the only advise they gave was to stop feeding once the temp gets below about 10 degrees cause the goldfish stop eating and the food just rots.

I have wintered my goldfish (althrough they are just plain old style) and WCMM's outside with no problems althrough I dont think my pond has ever frozen over.

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definitely the pond WILL freeze over in Christchurch in winter. I don't actually know that this causes a problem for the fish, as suphew says....hibernation mode.....but i had heard (please note... this has no substance whatsoever as i can't recall where i heard it from, but other readers here may know if it is true or not) that the ice should be broken daily (it is quite probable in Christchurch that it won't thaw during the day) to allow oxygen (???) Don't know if it is right or wrong, just something it might pay to look into.

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Sh** no,

ya don't break the ice.

NO WAY JOSE

It sends shock waves thru the water, worse than a tank being tapped.

But what ya can go is to have an airstone in there, and confine the bubbles to a circular ring.

This leaves a gap for the water to exchange gases, and the warmer water stops it from freezing.

You could also, money being the problem, have a heater in doing the same thing.

But with the cost of electricity not for me.

I wouldn't worry about it tho myself.

Gets a darn side colder in Europe, but the fish seem to survive ok.

But DO NOT Feed over the coldest part of winter, feed again when you see them moving about.

Another trick is to use fine bird-netting in the pond first,

then if you want to check the fish, just lift the netting.

I saw a goldfish importer doing this years ago.

Anyway, who said we are going to have a winter?

Alan 104

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I was worried more of the water temperatures rather than the ice. The worst that would probaly happen here is that the pond would freeze over, but most of the time you only get small sheets of ice.

I'm gonna be keeping orandas, maybe lionheads in there. My plans were to make it about a metre deep and its gonna get the morning/afternoon sun, does that sound alright to you guys? Isn't it true the deeper you go the warmer it is for the fish during winter?

And about the stoping ice from forming i've read that you can leave a bucket with a stone or something heavy, and it will just float around stoping it from freezing over.

thanks for the replies everyone

Jordan

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In general a pond freezes from the top down - almost all the heat gets lost from the surface. So yes, the bottom is warmer than the top, but not by a lot. The real advantage of having a deeper pond is that it is more water to cool per unit surface area, so it cools slower than a shallower pond. Therefore it won't get as cold in the first place.

If the water is moving that will discourage ice formation, but I doubt a bucket floating around will do enough to stir things up to stop ice formation. A bubbler will definitely keep a hole open, although I'm not sure I would bother.

Down here in Dunedin people keep goldfish outside over winter (my mother-in-law for one). I think you'll be fine.

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