I have a pond approx 3/4 of an acre and about 10 ft deep. It started to get a lot of grass in it this year so I put a sump pump down in it and made a fountain head for it. It seems to be helping to clean the top 12 to 18 inches of the pond. I also put in some grass carp to help control the grass do I need to place the pump at the deepest part of the pond to get the best results?
Good move on adding the grass carp, better than using chemicals at least in my book. Just be careful not to over stock the grass carp. Use them to manage the weeds not eradicate the weeds. When the weeds are gone what will the grass carp eat? They could eat at the banks of the pond, cause corrosion or root up the bottom clouding up the pond.
You are started in the right direction by getting the water moving in the pond and yes pushing up from the deepest depth would be best. Don’t start running the pump full time from the deepest depth as there should be a start up procedure so we’re not pushing all the non oxygenated water and toxic gasses up and into where the fish are, just a little each day to help send the toxic gasses to atmosphere. Also check out Aerator startup.
I’m not too sure on the size of sump pump being used, how many gallons per hour it moves. But the goal is to turn the entire volume of water over once a day.
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