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  1. #1
    Senior Member Rank = Gosai SamuraiJack's Avatar
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    a bad start and now i am stressed

    good morning all,

    i am going to make it short as possible and hope it will take some stress of my shoulders,
    bought the house with a raised 1500 gallon 3 inch bottom drain pond and also has a 2 inch side drain, both drains were chucking in dirty water into the filter, a home made filter which was daunting to clean, it got a leak 4 years ago which i could not find and gave up, i never had the courage to completely dismantle the pond hoping one day i will get it back running, that was 4 years ago.

    i got a pond repair man last week who put a new liner with underlay and took out the home made filter and replaced with a kockney koi kf5000 multi chamber vortex filter, the 2 inch side drain he has converted to a return with a 10000 Oase pump attached sitting in the pond with a venturi, when first started the pump was draining the filter too fast so he put a ball valve to regulate, at the moment it looks like it is turning over at 5000 lph, the reason being has he says is that the bottom drain might have an airlock, he says he has fitted the same filter in other places with a 3 inch bottom drain and the inflow is faster so the problem might be the the air lock in the bottom drain, said to get a 3 inch bung, drain the filter take the bung off and hopefully the pressure will get rid of the airlock, i don't know what to make of it now, also the flexi pipe attached to the pump in the pond as few jubilee clips which is a bit worrying as fish might get damaged on them,i don't know what to do, already spent a lot of money getting it to where it is now, any advice will be appreciated.

    many thanks

    Mo



  2. #2
    Extreme Koi Member Rank = Kyusai Scamp's Avatar
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    Hi Mo, hope you don’t get too disheartened. The kf500 has a max flow rate of 5500 kph according to their website, so 10000 would probably not be a good idea, and explain the drawdown in the filter:
    KF 5,000V SYSTEM (Fibreglass Filter & UV)
    So looks like he over specced the pump size.
    Is it a short run from pump to filter? Can you remember if bd pipework was horizontal with just one swept bend or 90 degree to the filter? If yes, unlikely to be an airlock, could just be too much flow...if you remove the intake to filter and put pump on full, could see if it blasts any muck out? Cheers

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  4. #3
    Extreme Koi Member Rank = Kyusai Scamp's Avatar
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    Hi Mo, hope you don’t get too disheartened. The kf500 has a max flow rate of 5500 kph according to their website, so 10000 would probably not be a good idea, and explain the drawdown in the filter:
    KF 5,000V SYSTEM (Fibreglass Filter & UV)
    So looks like he over specced the pump size.
    Is it a short run from pump to filter? Can you remember if bd pipework was horizontal with just one swept bend or 90 degree to the filter? If yes, unlikely to be an airlock, could just be too much flow...if you remove the intake to filter and put pump on full, could see if it blasts any muck out? Cheers

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  6. #4
    Extreme Koi Member Rank = Kyusai Scamp's Avatar
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    Sorry for double post, Wi-fi issues LOL

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  8. #5
    Senior Member Rank = Gosai SamuraiJack's Avatar
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    Quote Originally Posted by Scamp View Post
    Sorry for double post, Wi-fi issues LOL
    Thank you for the advice, will try and see what happens, if it don't then I will have to try and find another option or shut it down for another 4 years, lol

  9. #6
    Senior Member Rank = Rokusai Simon Fish's Avatar
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    Air can escape both ends on the bottom drain pipe, so unless it was fitted really badly shouldn't be a problem.
    Out of action for years could be a solid blockage??
    Either way try forcing some water through.

    The ball valve will slow the pump flow, but it won't lower the running cost! Jebao do a 5000lt pump at 22watts.

    Why is the pump in the pond? If it was fitted after the multi or in the last bay it could run to a shower etc, the midway pipe could be set as a return.

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  11. #7
    Extreme Koi Member Rank = Adult Champion anne's Avatar
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    [QUOTE=SamuraiJack;338737]good morning all,

    I
    .

    few jubilee clips which is a bit worrying as fish might get damaged on them,i don't know what to do, already spent a lot of money getting it to where it is now, any advice will be appreciated.

    many thanks
    Could you wrap some waterproof tape around the jubilee clips.....just to take the sharpness off them...….

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  13. #8
    Senior Member Rank = Gosai SamuraiJack's Avatar
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    Quote Originally Posted by Simon Fish View Post
    Air can escape both ends on the bottom drain pipe, so unless it was fitted really badly shouldn't be a problem.
    Out of action for years could be a solid blockage??
    Either way try forcing some water through.

    The ball valve will slow the pump flow, but it won't lower the running cost! Jebao do a 5000lt pump at 22watts.

    Why is the pump in the pond? If it was fitted after the multi or in the last bay it could run to a shower etc, the midway pipe could be set as a return.
    The last bay of the multi is connected to the side drain in the pond, he has attached a 2 inch flexi pipe connected to the pump which is sitting on the first step of the pond inside, so there is no flexi pipes going from the filter across the top of pond, I just took out the medium foam from the first chamber and replaced it with flocor which has slightly increased the flow to all other chambers
    Including the last chamber where the pump is taking it back into the pond, but this leaves me with more particles going in, the third chamber still has foam in it.

  14. #9
    Senior Member Rank = Gosai SamuraiJack's Avatar
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    [QUOTE=anne;338857]
    Quote Originally Posted by SamuraiJack View Post
    good morning all,

    I
    .

    few jubilee clips which is a bit worrying as fish might get damaged on them,i don't know what to do, already spent a lot of money getting it to where it is now, any advice will be appreciated.

    many thanks
    Could you wrap some waterproof tape around the jubilee clips.....just to take the sharpness off them...….
    That's a great idea, thank you

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  16. #10
    Senior Member Rank = Kyusai Sim's Avatar
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    Perhaps a few pictures would help if possible.

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  18. #11
    Senior Member Rank = Gosai SamuraiJack's Avatar
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    Not great pics
    Attached Images Attached Images

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  20. #12
    Senior Member Rank = Gosai SamuraiJack's Avatar
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    The 2nd pic is of the last chamber connected via side drain to pump water back into pond

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  22. #13
    Senior Member Rank = Gosai SamuraiJack's Avatar
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    Maybe i packed the 3rd chamber with too much foam

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  24. #14
    Senior Member Rank = Yonsai bicolormoth's Avatar
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    if you have a bottom drain, why is the pump in the pond ?

    where are you based ?
    5000g, Drum Filter/Gravity, + MBB, Skimmer-Sieve-Shower.

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  26. #15
    As above surely if it’s got a bottom drain it should be connected to beginning of filter in this case vortex then through the bays and last chamber should be connected to external mounted pump back to pond? As you mention using the mid level/2” pipe as a return,I can’t understand why you’d have a pump and flexi pipe/clips in the pond itself?
    I can’t see pics by the way (could be my settings I’m not sure,I can’t always see them on other posts) so just going from description only

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  28. #16
    Senior Member Rank = Gosai SamuraiJack's Avatar
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    Quote Originally Posted by bicolormoth View Post
    if you have a bottom drain, why is the pump in the pond ?

    where are you based ?
    I am based in Barking, Essex

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  30. #17
    Senior Member Rank = Yonsai bicolormoth's Avatar
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    if you have a bottom drain, why is the pump in the pond ?

    do you understand the difference between a Gravity Fed system and a Pump fed system ?

    pump.jpg pump fed system

    gravity..gif gravity fed system.
    5000g, Drum Filter/Gravity, + MBB, Skimmer-Sieve-Shower.

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  32. #18
    Senior Member Rank = Gosai SamuraiJack's Avatar
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    Quote Originally Posted by dan87 View Post
    As above surely if it’s got a bottom drain it should be connected to beginning of filter in this case vortex then through the bays and last chamber should be connected to external mounted pump back to pond? As you mention using the mid level/2” pipe as a return,I can’t understand why you’d have a pump and flexi pipe/clips in the pond itself?
    I can’t see pics by the way (could be my settings I’m not sure,I can’t always see them on other posts) so just going from description only
    Instead of placing the pump in the last chamber it has been placed in the pond connected to the 2 inch side pipe inside pond which is connected to the last chamber, sorry you could not see the pics and I'm really sorry for pestering you all, and now the home minister is on my case too

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  34. #19
    Senior Member Rank = Yonsai bicolormoth's Avatar
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    whoever did that to your pond wants a clock around the head mate., you have a bottom drain and a '' 2 inch side drain'' which can be your return. so your system is perfect for a gravity fed set up.
    5000g, Drum Filter/Gravity, + MBB, Skimmer-Sieve-Shower.

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  36. #20
    Senior Member Rank = Gosai SamuraiJack's Avatar
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    Quote Originally Posted by bicolormoth View Post
    if you have a bottom drain, why is the pump in the pond ?

    do you understand the difference between a Gravity Fed system and a Pump fed system ?

    pump.jpg pump fed system

    gravity..gif gravity fed system.
    The old home made filter had 2 pipes coming into it, one pipe from the bottom of the pond and one pipe from the side about 10 inches down from the top, both these pipes were connected at the front of the old filter, the new filter has the bottom drain connected to the vortex and the side pipe is now used as a return, the pump is now placed in the pond instead of the last chamber connected to the side pipe returning the filtered water back into pond, I don't know if I can upload a video, sorry if I am being a pain.

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