Piping for northern climates Hard pvc or flex?


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Which would you use and why
 
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Another vote for Flex pipe. Btw we are neighbors :) I just had a piece crack this year but it is the first issue since owning the pond. This was more due to my level of the pipe for water then material used. I like the look of the pipe better if there is any exposed then the PVC also. I did mix a couple areas with PVC fittings on the Flex pipe which worked like a dream. Overall a lot less seems to worry about.
 

addy1

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I hard piped mine, had no issues running it where it was needed.
 
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I recently rebuilt using both flexible and PVC. Used the PVC for long straight runs and flexible at bends and attachment sites into skimmer and falls.
 
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I'm not worried about the work of hard pipe or ease of flex . My concern was which would fair better at shallower depths with freezing. I plan on running pipes that have to run from one side of the pond to the other in order o reach the pump by having the pipe in the excavation of the pond say in the first shelf but at the 90 degree angle which should help keep the water warmer. I imagine the use of flex will also be better for a little freeze and flex but the flex is not as durable.
 
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You're going to run your plumbing inside your pond? Like under the liner? That one confused me a little!
 
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under both the first underlayment and the liner fill in the rounds of the pipe so it is one with the wall . inside the excavation but not in the water but on the outside of the liner but at even a foot below grade it should be able to keep the water warm to where freezing shouldn't occur
 
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Well I’m completely confused as to how or why that will happen but that’s not the first time! Haha!
 
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I've followed the builds of a professional koi pond builder and he uses solid PVC under the pond for his bottom drains.
 
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Remember pvc comes in different thicknesses .Thin wall and thick wall .I wonder if ABS piping would be better
 
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