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Ponds over the winter
I was just thinking about one or two things & was wondering what happens to
the oxygen levels in the pond over the winter if all the filtration/circulation is switched off. I know the fish go very quiet & hang out down the bottom but surely the water down there gets pretty oxygen depleted? As I understand it water is actually at its most dense at about 4 degrees C (39F) so in the height of winter its quite likely that the pond is actually warmer at the bottom than the top. If this is so then its obviously not a good idea to circulate the water out the bottom of the pond in mid winter (assuming filters use a bottom drain etc) which means the filters really do need to be turned off.... What's the general concensus - how do the fish survive in an oxygen depleted environment? I. |
Ponds over the winter
Cold water holds more oxygen than warm water. The fish are not using much
oxygen, in their winter stupor. If you do not freeze, I believe the pond should be kept running, filters and everything. If you do have heavy freezes, where the pond is going to freeze over and stay frozen for some period of time, some means of keeping a hole in the ice is needed to allow the toxic gasses to escape and oxygen to get into the water. The most common methods are the use of an air stone, which keeps the water moving near the surface, and moving water is much harder to get to freeze. The other is the use of a pump to again disturb the surface of the pond. The air stone and the pump should be mounted fairly close to the surface. As for disturbing the bottom water, I don't think our ponds are really deep enough to get a real thermal layer that could be stirred up, but the heat of the earth, always around 50 degrees a few feet below the frost line, sends heat up and through the liner, making the bottom water warmer, though some of the heat moves upward and escapes. The fish hang close to the liner, where the heat is coming from. -- RichToyBox http://www.geocities.com/richtoybox/pondintro.html "Iain Miller" wrote in message ... I was just thinking about one or two things & was wondering what happens to the oxygen levels in the pond over the winter if all the filtration/circulation is switched off. I know the fish go very quiet & hang out down the bottom but surely the water down there gets pretty oxygen depleted? As I understand it water is actually at its most dense at about 4 degrees C (39F) so in the height of winter its quite likely that the pond is actually warmer at the bottom than the top. If this is so then its obviously not a good idea to circulate the water out the bottom of the pond in mid winter (assuming filters use a bottom drain etc) which means the filters really do need to be turned off.... What's the general concensus - how do the fish survive in an oxygen depleted environment? I. |
Ponds over the winter
btw - interesting article in this month's issue of Smithsonian about those
lakes in Africa in which the layers don't mix. Result is a periodic poisonous release of gas that is lethal to residents and livestock. k30a and the watergardening labradors http://www.geocities.com/watergarden...dors/home.html |
Ponds over the winter
In article , "Iain Miller"
writes: If this is so then its obviously not a good idea to circulate the water out the bottom of the pond in mid winter (assuming filters use a bottom drain etc) which means the filters really do need to be turned off.... if the water temps drops below 50 and stays there, I would turn off any pump to your bio filter. If you have a mechanical filter, raise the pump up to a high level of the pond so that the discharge is right at the surface of the water. This keeps a hole open for gas exchanges and doesn't disturb the bottom water. Karen Zone 5 Ashland, OH http://hometown.aol.com/kmam1/MyPond/MyPond.html My Art Studio at http://members.aol.com/kmmstudios/K....M.Studios.html for email remove the extra extention |
Ponds over the winter
yeah, I put a plastic tent over my pond in the frozen tundra zone 5. but I put my
pump into a bucket filter and hang that inside. it both filter crud outta the water and oxygenates well enough and keeps the surface of the water ice free all winter. best is it will work even if we have a power outage for a while and the pond does freeze over. Ingrid "Iain Miller" wrote: I was just thinking about one or two things & was wondering what happens to the oxygen levels in the pond over the winter if all the filtration/circulation is switched off. I know the fish go very quiet & hang out down the bottom but surely the water down there gets pretty oxygen depleted? As I understand it water is actually at its most dense at about 4 degrees C (39F) so in the height of winter its quite likely that the pond is actually warmer at the bottom than the top. If this is so then its obviously not a good idea to circulate the water out the bottom of the pond in mid winter (assuming filters use a bottom drain etc) which means the filters really do need to be turned off.... What's the general concensus - how do the fish survive in an oxygen depleted environment? I. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List Manager: Puregold Goldfish List http://puregold.aquaria.net/ www.drsolo.com Solve the problem, dont waste energy finding who's to blame ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Unfortunately, I receive no money, gifts, discounts or other compensation for all the damn work I do, nor for any of the endorsements or recommendations I make. |
Ponds over the winter
do You (or anyone else) have pics of winter covered ponds??
I am trying to 'suggest' to my hubby to do this, but he feels it would collapse (or rip) under the weight of snow. wrote in message ... yeah, I put a plastic tent over my pond in the frozen tundra zone 5. but I put my pump into a bucket filter and hang that inside. it both filter crud outta the water and oxygenates well enough and keeps the surface of the water ice free all winter. best is it will work even if we have a power outage for a while and the pond does freeze over. Ingrid " |
Ponds over the winter
here you go. http://users.megapathdsl.net/~solo/p...ntr/winter.htm
Ingrid "*muffin*" wrote: do You (or anyone else) have pics of winter covered ponds?? I am trying to 'suggest' to my hubby to do this, but he feels it would collapse (or rip) under the weight of snow. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List Manager: Puregold Goldfish List http://puregold.aquaria.net/ www.drsolo.com Solve the problem, dont waste energy finding who's to blame ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Unfortunately, I receive no money, gifts, discounts or other compensation for all the damn work I do, nor for any of the endorsements or recommendations I make. |
Ponds over the winter
I have a picture of the frame for my cover on
http://www.geocities.com/richtoybox/pondpage3.html. The picture was taken in the spring, after the plastic covering was removed, but before I removed the frame. -- RichToyBox http://www.geocities.com/richtoybox/pondintro.html "*muffin*" wrote in message ... do You (or anyone else) have pics of winter covered ponds?? I am trying to 'suggest' to my hubby to do this, but he feels it would collapse (or rip) under the weight of snow. wrote in message ... yeah, I put a plastic tent over my pond in the frozen tundra zone 5. but I put my pump into a bucket filter and hang that inside. it both filter crud outta the water and oxygenates well enough and keeps the surface of the water ice free all winter. best is it will work even if we have a power outage for a while and the pond does freeze over. Ingrid " |
Ponds over the winter
I have a picture of the frame for my cover on
http://www.geocities.com/richtoybox/pondpage3.html. The picture was taken in the spring, after the plastic covering was removed, but before I removed the frame. -- RichToyBox http://www.geocities.com/richtoybox/pondintro.html "*muffin*" wrote in message ... do You (or anyone else) have pics of winter covered ponds?? I am trying to 'suggest' to my hubby to do this, but he feels it would collapse (or rip) under the weight of snow. wrote in message ... yeah, I put a plastic tent over my pond in the frozen tundra zone 5. but I put my pump into a bucket filter and hang that inside. it both filter crud outta the water and oxygenates well enough and keeps the surface of the water ice free all winter. best is it will work even if we have a power outage for a while and the pond does freeze over. Ingrid " |
Ponds over the winter
I have a picture of the frame for my cover on
http://www.geocities.com/richtoybox/pondpage3.html. The picture was taken in the spring, after the plastic covering was removed, but before I removed the frame. -- RichToyBox http://www.geocities.com/richtoybox/pondintro.html "*muffin*" wrote in message ... do You (or anyone else) have pics of winter covered ponds?? I am trying to 'suggest' to my hubby to do this, but he feels it would collapse (or rip) under the weight of snow. wrote in message ... yeah, I put a plastic tent over my pond in the frozen tundra zone 5. but I put my pump into a bucket filter and hang that inside. it both filter crud outta the water and oxygenates well enough and keeps the surface of the water ice free all winter. best is it will work even if we have a power outage for a while and the pond does freeze over. Ingrid " |
Ponds over the winter
NO! they arent wanted, and couldnt get thru the netting anyway. I havent even seen
dragonflies try to get thru the netting. Ingrid jammer wrote: Ingrid, that's pretty cool. Do toads ever find their way in there? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List Manager: Puregold Goldfish List http://puregold.aquaria.net/ www.drsolo.com Solve the problem, dont waste energy finding who's to blame ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Unfortunately, I receive no money, gifts, discounts or other compensation for all the damn work I do, nor for any of the endorsements or recommendations I make. |
Ponds over the winter
Ok, then i do not want one. Thank you:)
On Sun, 31 Aug 2003 14:47:28 GMT, wrote: NO! they arent wanted, and couldnt get thru the netting anyway. I havent even seen dragonflies try to get thru the netting. Ingrid jammer wrote: Ingrid, that's pretty cool. Do toads ever find their way in there? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~ List Manager: Puregold Goldfish List http://puregold.aquaria.net/ www.drsolo.com Solve the problem, dont waste energy finding who's to blame ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~ Unfortunately, I receive no money, gifts, discounts or other compensation for all the damn work I do, nor for any of the endorsements or recommendations I make. |
Ponds over the winter
I don't believe toads winter under water anyway. ~ jan
On Sun, 31 Aug 2003 22:07:20 -0500, jammer wrote: Ok, then i do not want one. Thank you:) On Sun, 31 Aug 2003 14:47:28 GMT, wrote: NO! they arent wanted, and couldnt get thru the netting anyway. I havent even seen dragonflies try to get thru the netting. Ingrid jammer wrote: Ingrid, that's pretty cool. Do toads ever find their way in there? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~ List Manager: Puregold Goldfish List http://puregold.aquaria.net/ www.drsolo.com Solve the problem, dont waste energy finding who's to blame ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~ Unfortunately, I receive no money, gifts, discounts or other compensation for all the damn work I do, nor for any of the endorsements or recommendations I make. See my ponds and filter design: http://users.owt.com/jjspond/ ~Keep 'em Wet!~ Tri-Cities WA Zone 7a To e-mail see website |
Ponds over the winter
No, of course they don't! I meant for spawning during the spring.
On Mon, 01 Sep 2003 15:37:56 GMT, ~ jan JJsPond.us wrote: I don't believe toads winter under water anyway. ~ jan On Sun, 31 Aug 2003 22:07:20 -0500, jammer wrote: Ok, then i do not want one. Thank you:) On Sun, 31 Aug 2003 14:47:28 GMT, wrote: NO! they arent wanted, and couldnt get thru the netting anyway. I havent even seen dragonflies try to get thru the netting. Ingrid jammer wrote: Ingrid, that's pretty cool. Do toads ever find their way in there? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~ List Manager: Puregold Goldfish List http://puregold.aquaria.net/ www.drsolo.com Solve the problem, dont waste energy finding who's to blame ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~ Unfortunately, I receive no money, gifts, discounts or other compensation for all the damn work I do, nor for any of the endorsements or recommendations I make. See my ponds and filter design: http://users.owt.com/jjspond/ ~Keep 'em Wet!~ Tri-Cities WA Zone 7a To e-mail see website |
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