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  1. #1
    Senior Member Rank = Adult Champion smartin's Avatar
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    Ran the pumps up

    During the colder weather i have the air turned down slightly and also reduce the flow through the pumps so once a week i turn the pumps on full to give the pipework a good clear out of any settling debris, looking at the drum not much rubbish came through so hopefully the pipes are relatively clear still, the 10k pump i am running at 40% this deals with the filtration side and the 20k i run at 40% this deals with the bottom drain, i turned the trickle off some weeks ago now but will soon turn it back on for a week to refresh the water a bit even though it may drop the water temp slightly, overall water clarity looks great and parameters have been spot on so hopefully best prepared for the springtime, i so hope this year is not so prevalent for us all with flukes and other nasties, last year was just horrendous.


    2200 gallons, infinity window, BD
    Evolve 4000 combi amalgam UV
    10k,20k AF pumps
    Skimmer trickle.

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  3. #2
    Like you, I'm really hoping this year will be better. Last summer, I dreaded looking out at the pond first thing in the morning, for fear of finding more dead fish

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  5. #3
    Senior Member Rank = Adult Champion smartin's Avatar
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    Quote Originally Posted by g mac View Post
    Like you, I'm really hoping this year will be better. Last summer, I dreaded looking out at the pond first thing in the morning, for fear of finding more dead fish
    well here's hoping for a trouble free year mate for everyone, i know you had it bad last year too..... ATB Steve
    2200 gallons, infinity window, BD
    Evolve 4000 combi amalgam UV
    10k,20k AF pumps
    Skimmer trickle.

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  7. #4
    Senior Member Rank = Grand Champion RS2OOO's Avatar
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    Hi Smartin,

    Hope you are well.

    I follow exactly the same procedure with the pumps and bottom drain. I also do a partial purge of the bottom drain once every 1 to 2 weeks, get a lot of small flaky bits come up but nothing major.

    Was watching a youtube video of someone doing a pond extension and he was absolutely shocked at the amount of crud collected in his bottom drain. He was only running 6k lph and his suggestion was if you're running a small pond at that flow you'd be better off with a 3" pipe run as the flow is too slow to keep a 4" run clear.

    I would suggest not adding any new Koi to your pond this year - just see how things go and if you get to summer without any issues. That would then indicate your pond is clear. For any subsequent additions to the pond after that maybe ask the seller to scrape before you collect, or set up a QT.

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  9. #5
    Senior Member Rank = Nanasai Twhitenosugar's Avatar
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    Here's to hoping it won't be like it was last year with all the parasites.

    I purge my bottom drain straight to waste when doing water changes. I also occasionally close the valves before the drum, let the water level drop in the drum then open the bottom drain valve back on to flush out crud.

    And despite purging my bottom drain regularly, I still gets strips of crud flow into the drum, which I'm guessing has been stuck to the inside of the pipes.

    So i have to agree keeping a good flow through the bottom drain pipework is probably the best way for keeping it clear.

    Sent from my Pixel 4a (5G) using Tapatalk
    12,500L fibreglassed raised pond with window

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