When to turn off filter in winter.

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I have always been confused about when to shut off my filters. I have read that fish need a warmer area on the bottom of the pond in winter to survive. If I run my filter it will circulate the water and make the cold water at the top reach the bottom. Someone please tell me when to turn off my filters. I have a 4 foot deep pond that is 12 feet by 9 feet and live in New Jersey. It gets cold! Please explain what to do I have never found an answer. I have made it through two winters. But last winter it got warm and I had ammonia and lost a fish because I didn’t run the filters in winter. I’m confused and climate change does not help.
 
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I leave mine running till I get at least 50% of the ponds covered with ice. You can move your pumps up off the bottom of the pond by setting them on a milk crate. I have mine hanging on ropes. Do you have any way to keep a hole open in the ice? Stock tank heater, pond breather?
 
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We run our pond all winter long here in the frigid midwest as do many, many pond owners here. The biggest consideration is whether or not your waterfall can handle the ice that develops without re-directing water out of the pond.

Where is your pump located? If it's in a skimmer box or external to the pond, your fear of affecting the temperature of the water is unfounded. If it sits on the bottom of the pond, like @mrsclem said, just raise it up. At four feet deep your fish will have plenty of warmer water near the bottom.
 
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We tur ours off sometime in late Nov. or ito Dec., just depends on the weather. I like to leave it ruing as log as I can. however our filter will crack if it freezes.

I've been covering my pond in the winter with a pool solar cover for the last few winters. I suspend air stones about 10 inches into the water and run a Pondbreather too.
 
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addy1

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I turn mine off in November, external pump. Plug in the pond breathers leave the pond to itself until spring.
 

Jhn

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Like Lisak1, I leave my filter running all winter. However, it can’t ice dam and the pump is in a skimmer box.
 
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I have never found an answer to this question will someone please help? I have learned that in cold winter weather that fish go to the deepest part of the pond for the warmest water to hibernate in. If I leave my filters on won’t I be stirring the water making the deep part of my pond as cold as the surface? Please tell me at what temperature I should pull the filter out and let the fish be in still water.
Thanks to you for your help.
 
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I leave mine running till I get at least 50% of the ponds covered with ice. You can move your pumps up off the bottom of the pond by setting them on a milk crate. I have mine hanging on ropes. Do you have any way to keep a hole open in the ice? Stock tank heater, pond breather?
Yes. I use a floating heater to keep a hole open in the ice. I was worried about mixing the cold upper water with the warmer deep water for the fish. I can’t find guidelines on this. Confused because they need to go to the bottom of the pond where it’s warmest but if I run my filter I mix that cold water up and send it to the bottom.
 
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I leave mine running till I get at least 50% of the ponds covered with ice. You can move your pumps up off the bottom of the pond by setting them on a milk crate. I have mine hanging on ropes. Do you have any way to keep a hole open in the ice? Stock tank heater, pond breather?
Good idea, but my pumps are strong and may make the water move the colder water to the bottom even if elevated.
 
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We run our pond all winter long here in the frigid midwest as do many, many pond owners here. The biggest consideration is whether or not your waterfall can handle the ice that develops without re-directing water out of the pond.

Where is your pump located? If it's in a skimmer box or external to the pond, your fear of affecting the temperature of the water is unfounded. If it sits on the bottom of the pond, like @mrsclem said, just raise it up. At four feet deep your fish will have plenty of warmer water near the bottom.
Thanks! If I have an 1100 gph on one, the other is a 3000 gph won’t it stir up my warmer, deep water even if I raise it up? This is were my confusion comes in. Can I stir the water or not? I am so grateful for the help and expertise. ❤
 
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I turn mine off in mid to late October and plug the air stones in. I turn it back on around the beginning of May.
Thank you. I’ve been doing the same, but after my fish death ( warm winter) I got concerned that I was making a mistake. It was my favorite fish, a total sweetheart. I can’t forgive myself and wish I had never started the pond being so inexperienced. ☹ Now I feel so obligated to give them everything they need in the best way I can.
 
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We run our pond all winter long here in the frigid midwest as do many, many pond owners here. The biggest consideration is whether or not your waterfall can handle the ice that develops without re-directing water out of the pond.

Where is your pump located? If it's in a skimmer box or external to the pond, your fear of affecting the temperature of the water is unfounded. If it sits on the bottom of the pond, like @mrsclem said, just raise it up. At four feet deep your fish will have plenty of warmer water near the bottom.
I don’t have a traditional system. I dug my pond myself and my filter is two buckets submerged with holes drilled in them, filled with substrate with pumps inside the middle of the buckets. They sit on the bottom and the hoses come up and I hook them above my pond to aerate for the return. One is 1100 gph and the other is just a bit less strong. So my system will stir the water maybe to much when it’s cold? Maybe if I remove one and place the other on a crate up higher it would only filter the top? I guess I wonder if moving the colder water is worse than continuous filtration. Thank you very much for answering.
 
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I apologize to all who may be frustrated by my posts. I have the tech savvy of a hamster. I believe I posted my question twice an am unsure if I’m answering all. I’m trying to learn how to navigate the forum and am grateful to all who helped me. Thank you.
 
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Good morning! I think the best bet would be if some of our folks in the northeast chime in. It will all depend on your winter weather in your part of the country. I know you will get some good advice!
 

Jhn

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As I mentioned in your other post I leave my pumps/ aerator running all winter, but I move the air diffuser up to a shallower spot in the pond and my pumps are in skimmers. I have had the entire pond ice up about 10” thick before with the pump still running and have never lost fish.

I would move at least one of your pumps up to the shallower portion of the pond or boost it up on something off the bottom and leave it run all winter. Just be sure that the return can’t divert water out of the pond if it starts to ice up.
 
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You're doing great!

So your only filtration is the two buckets and they are on the bottom of the pond. With four feet of depth to work with, if you can easily raise the pumps up off the bottom a foot or two, I think you'd be fine to run them all winter if you wanted to. How often do you need to clean your filters? That would definitely be a factor.

For the record, I don't think your filter set up is going to do much if anything to alleviate ammonia in the pond, either summer or winter. Your homemade filters are doing mechanical filtration but it's biological filtration that breaks down ammonia. (Unless I'm misunderstanding your description - I have the mechanical savvy of your hamster's sister!)
 
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Any disadvantage or problem to having an air stone mid way the pond as well a Pond breather. Worried about being a little overstocked.
 
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