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Hello, I'm a newbie here. I have a 1 acre pond in my back yard and have recently purchased an aerator for it. It has 3 diffusers and a Gast 87R compressor. Every year, I need to spend money to put chemicals in to keep the algae away. This past summer I was using a yard sprayer mounted to the front of my Coleman Crawdad to distribute it. It worked, but was time consuming to get the sprayer, battery, trolling motor, etc in the boat. To help speed the treatment process up, I was thinking of using a venturi between the compressor and the diffusers to treat the pond. Has anyone tried this or am I destined to continue to use the boat to treat the pond.

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I've never heard of that being done before. I have no idea what effect that would have on the diffusers, and the other concern would that the algaecide would not be distributed equally in the shallow areas where it is needed the most.


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My fear would be that the liquid that you are introducing into the aeration air stream would settle in the line and render the diffuser inoperable. I once ended up with pond water in one of my three diffuser lines and that diffuser stopped bubbling. Once the water (a gallon, maybe two) was removed by pulling the diffuser and disconnecting the line...the diffuser was back in operation. I was amazed that the water was not able to be pushed out by my 1/4 hp pump, but it must have added enough resistance in that line to re-route the air flow to the other two lines.

As Esshup mentioned, distribution would be unpredictable in a 1 acre BOW with only 3 diffusers. 3 diffusers may be plenty for aeration purposes, but relying on them to work a chemical throughout the whole pond would be very questionable.


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Originally Posted by Farmshopmafia
Hello, I'm a newbie here. I have a 1 acre pond in my back yard and have recently purchased an aerator for it. It has 3 diffusers and a Gast 87R compressor. Every year, I need to spend money to put chemicals in to keep the algae away. This past summer I was using a yard sprayer mounted to the front of my Coleman Crawdad to distribute it. It worked, but was time consuming to get the sprayer, battery, trolling motor, etc in the boat. To help speed the treatment process up, I was thinking of using a venturi between the compressor and the diffusers to treat the pond. Has anyone tried this or am I destined to continue to use the boat to treat the pond.


This is a bad idea. On multiple levels.
Don't do it!
Welcome to the forum.

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Originally Posted by esshup
I've never heard of that being done before. I have no idea what effect that would have on the diffusers, and the other concern would that the algaecide would not be distributed equally in the shallow areas where it is needed the most.
Would the algaecide not be distributed in the same way as dye is when you dump it on the edge?

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Originally Posted by Quarter Acre
My fear would be that the liquid that you are introducing into the aeration air stream would settle in the line and render the diffuser inoperable. I once ended up with pond water in one of my three diffuser lines and that diffuser stopped bubbling. Once the water (a gallon, maybe two) was removed by pulling the diffuser and disconnecting the line...the diffuser was back in operation. I was amazed that the water was not able to be pushed out by my 1/4 hp pump, but it must have added enough resistance in that line to re-route the air flow to the other two lines.

As Esshup mentioned, distribution would be unpredictable in a 1 acre BOW with only 3 diffusers. 3 diffusers may be plenty for aeration purposes, but relying on them to work a chemical throughout the whole pond would be very questionable.

I think I may have seen a post you made about that when I was searching the forum to see if anyone had ever tried it. Did you try turning off the other two lines when you had that issue?

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I do not recall what I tried to do to undo the situation, but my system has flow controls on each line...surely I would have turned the others off, or down, to force the one to flow...Maybe I didn't due to the concern of deadheading the pump. If I get too high of back pressure on the pump, it chatters pretty good. I just don't recall.

IF (big IF), your approach would work with respect to dispersing the chemical into the pond waters...I would not inject it into the air stream of the aeration system, but rather introduce the chemicals at the diffusers directly into the pond. Something like a jug with small holes in it to allow a slow release and hoping the current caused by the diffusers carries it where you need it. I'm just brain storming and have no experience with treating ponds for algae or or other plant life.

If it were me, I'd get the boat out.

Welcome, by the way, and you've come to the right place for solid advise and such!


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I maybe way off on this. But dosnt the air push the algae away? That would mean your are putting the chemicals farthest from where you need it most. My personal opinion is you would want to go along your bank more so than the middle.


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Originally Posted by Farmshopmafia
Originally Posted by esshup
I've never heard of that being done before. I have no idea what effect that would have on the diffusers, and the other concern would that the algaecide would not be distributed equally in the shallow areas where it is needed the most.
Would the algaecide not be distributed in the same way as dye is when you dump it on the edge?


Yes it would, but it still wouldn't help. When you apply the algaecide you are supposed to use a strong stream to break up the mats so the algae is exposed to the algaecide. If left in mats, the outer pieces of the mat are exposed, but it has a hard time penetrating the mats because water doesn't flow easily through the mats to carry the algaecide with it.

You can do an experiment by just taking the boat out in the pond and dumping the algaecide in the plume. BUT you'd have to trickle it in to get the same effect.


I still applaud the out of the box thinking, but I don't think it will work as well as you are expecting. Only one way to know for sure is to try it, at the very worst you will either stall out the compressor or plug the diffuser. Both are just mechanical things that can be fixed or repaired.

You will have to meter the algaecide in somehow so you don't overdose the area. Some fish are more sensitive to copper than others and if you see some dead fish, after doing it then that is what I'd attribute the deaths to.


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