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#486128 - 02/14/18 01:41 PM Re: 8 acre pond at 10,000' - lots of aeration ?s [Re: wbuffetjr]
canyoncreek Offline


Registered: 05/07/13
Posts: 1708
Loc: West Michigan
Ok so how did alcohol backtrack into the pump, or was that a different pump that got alcohol backtracking?

Do you know how condensation gets in the lines or what the solution is? Is the windmill line somehow more prone to condensation build up due to lower PSI than the ones that are run by the bigger solar powered pumps? It seems you could keep moving condensation through the lines with the PSI (40) that you are pushing through those lines compared to most aeration systems that are say 10 or less psi.

And if condensation happens and you freeze up does that happen only in the section where the air line is under dirt on the way to the water, or does that happen in the area where it is on the bottom of the pond/lake? I would think the warm water on the bottom of the pond would keep things from freezing up there.

I'm showing my ignorance here but probably others will face condensation at some point and this is a good time to understand how it happens, why it happens, and how to fix it.

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#486130 - 02/14/18 02:05 PM Re: 8 acre pond at 10,000' - lots of aeration ?s [Re: canyoncreek]
Bocomo Offline


Registered: 05/06/12
Posts: 1102
Loc: Boone County, MO (pond)
Originally Posted By: canyoncreek
Do you know how condensation gets in the lines or what the solution is?


Increasing pressure raises the dew point temperature inside the system above the ambient value. If the temperature inside the system is below the new dew point, condensation will form.
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#486142 - 02/14/18 03:48 PM Re: 8 acre pond at 10,000' - lots of aeration ?s [Re: canyoncreek]
wbuffetjr Offline


Registered: 08/16/14
Posts: 756
Loc: in the mountains
Originally Posted By: canyoncreek
Ok so how did alcohol backtrack into the pump, or was that a different pump that got alcohol backtracking?

Do you know how condensation gets in the lines or what the solution is? Is the windmill line somehow more prone to condensation build up due to lower PSI than the ones that are run by the bigger solar powered pumps? It seems you could keep moving condensation through the lines with the PSI (40) that you are pushing through those lines compared to most aeration systems that are say 10 or less psi.

And if condensation happens and you freeze up does that happen only in the section where the air line is under dirt on the way to the water, or does that happen in the area where it is on the bottom of the pond/lake? I would think the warm water on the bottom of the pond would keep things from freezing up there.

I'm showing my ignorance here but probably others will face condensation at some point and this is a good time to understand how it happens, why it happens, and how to fix it.


Canyon - Different pump that had the alcohol back up. I have a check valve on the airline. First, he poured the alcohol in without closing the valve to the pump so some ran backwards into the pump. Then with the line frozen up, the pump couldn't open the check valve to get the alcohol past it.

The big solar pumps made a ton more condensation than the windmill. From what I now know, if you compress air you WILL make condensation. As the volume air you compress increases, the volume of condensation produced will also increase. The regular movement of the air will not push the condensation out of the dip. The condensation will accumulate there and basically reduce the size of your airline.

The frost line normally does not go very deep on the mountain because we usually get so much snow so fast early in Winter. This year the snow came later up there than anyone has ever seen. That allowed the frost to go much deeper than normal. I have no idea how deep. I also do not know where my line froze up.
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#486143 - 02/14/18 04:22 PM Re: 8 acre pond at 10,000' - lots of aeration ?s [Re: wbuffetjr]
Bill Cody Offline
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Registered: 04/18/02
Posts: 12299
Loc: Northwest Ohio - Malinta OH
Your news was disappointing. Initially the system was running well. Make sure you verify that it is condensation freeze up that is plugging the airline compared to a leaky check valve on a diffuser. When pump stops and the check valve fails to close tightly, water leaks and fills the airline until everything under water has water in it. At the waterline a plug will freeze.
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#486144 - 02/14/18 04:28 PM Re: 8 acre pond at 10,000' - lots of aeration ?s [Re: wbuffetjr]
wbuffetjr Offline


Registered: 08/16/14
Posts: 756
Loc: in the mountains
Bill I have a couple unused valves in the valve box we were using to "blow out" the condensation once we figured out what was going on. Let them build up pressure, open the up quickly and blow out some water, close and repeat. Last time he went up there, with the pump running, no air would come out of the unused valves. Plus, it had shut down every single diffuser. It has to be frozen up somewhere before the box.
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