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How to clean out a deep settling tank?
I'm planning a new pond and stream and have the following problem
figuring out how to clean out the gunk carried away from the bottom drain. In short, it's going to be 5' underground where I can't just open a valve and drain it off. The distance from the bottom drain to a bio filter at the head of the stream will be about 45'. With the bottom of the pond at at least 3' and the bottom drain pipe dropping at least 1/4" per foot, that puts the output of the drain pipe at least 4' below ground level. I plan to have a gravity-fed drum there from which water will be pumped into the bio filter. The drum will act as a settling tank for the crud carried away from the bottom drain. Should I put a small pump in the drum that can tollerate the gunk in the water to occasionally pump it out, or is there a better solution? |
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wrote in message
oups.com... I'm planning a new pond and stream and have the following problem figuring out how to clean out the gunk carried away from the bottom drain. In short, it's going to be 5' underground where I can't just open a valve and drain it off. The distance from the bottom drain to a bio filter at the head of the stream will be about 45'. With the bottom of the pond at at least 3' and the bottom drain pipe dropping at least 1/4" per foot, that puts the output of the drain pipe at least 4' below ground level. I plan to have a gravity-fed drum there from which water will be pumped into the bio filter. The drum will act as a settling tank for the crud carried away from the bottom drain. Should I put a small pump in the drum that can tollerate the gunk in the water to occasionally pump it out, or is there a better solution? I can't imagine that a submersibile pump would create the suction you'd need to pump up the gunk every so often. Especially not if it has to pump out muck at least 5 feet. Remember this is something that needs to be done regularly, if it's not easy, it's not done regularly. I use two 55 gal drums that are hidden behind the waterfall, as two settling chambers in series. I drilled out a hole near the bottom and put a valve at the bottom. Just open the valve, drain out the water, move the nearly empty drum to the lawn, dump out the rest, hose out the inside, and i'm done. -S |
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