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  1. #1
    Senior Member Rank = Yonsai Martin59's Avatar
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    New quarantine tank build

    Hi all.
    Just taken delivery of an ibc tank which Iím going to convert into quarantine/hospital tank.
    Itís 1000 litres, and itís foodgrade rebottled.
    Has anyone got any suggestions on a filter system for it. Never setup a system for such a small amount of water.
    Many thanks Martin.


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  3. #2
    Senior Member Rank = Adult Champion Alburglar's Avatar
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    I had everything over head on my IBC tank. It's built to take the weight.
    2660 Gallons. 4" Bottom Drain and Skimmer. Draco Solum 16 Drum. Anoxic Filtration. Air lift returns.

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  5. #3
    Senior Member Rank = Yonsai Martin59's Avatar
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    Quote Originally Posted by Alburglar View Post
    I had everything over head on my IBC tank. It's built to take the weight.
    Thanks Alburglar for the reply.
    These tanks do seem very sturdy. What type of filtration system did you install on yours, shop bought or self made. Did you use the bottom outlet as a bottom drain, or did you just put a pump in?

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  7. #4
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    My qt (although not an ibc tank) is set up with a 3" bottom drain, feeding a secondhand gravity sieve, which is pumped (via a jebao TSP 10k pump) up to a home made moving bed filter (a large wham box) which flows via gravity back into the QT.

    This setup works really well, at one point I had 5 good sized koi (one of which was a near 20lb mirror carp) in only 1.3k litres and they were fine in it.

    I'd highly recommend installing a purge valve on any BD pipework. I have a 2" ball valve on mine which has some heavy duty pond hose on it. It's really handy as when I want to do a water change, I can roll the hose out to the nearest drain and dump water quickly. It clears out the bottom drain pipework quickly with minimal effort.

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    Last edited by Twhitenosugar; 11-05-2024 at 08:34 AM.
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  9. #5
    Senior Member Rank = Adult Champion Alburglar's Avatar
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    I had a pump in the tank. Kockney Koi filter box with UV and Diy moving bed. Worked well for two years. Wrapped in bubble wrap over winter.
    2660 Gallons. 4" Bottom Drain and Skimmer. Draco Solum 16 Drum. Anoxic Filtration. Air lift returns.

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  11. #6
    Senior Member Rank = Yonsai Martin59's Avatar
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    Thanks for the feedback, given me something to think about, although I am leaning towards the bottom drain option, as these tanks have a built in 2 inch bottom drain, seems a shame not to use it. As for the actual filter system, I think I’ll go for a home-made moving bed of some sort but the mechanical side I’m not too sure what to go for, box filter, sieve, pressure filter?

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  13. #7
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Hi Martin,
    I havnt got an ibc but thinking about getting one for my fry.
    They have a 2ins tap I believe and does the bottom slope slightly towards the tap.
    This tap could be used as the drain to an external pump, so 2ins out of the tap to a "T" from the T to pump and to a valve for drainage.
    Pump up to a settlement be it seive or your choice.
    I am useing a childs paddling pool at the moment with an internal pump,up to a DIY box with some very fine mesh on the top with filter floss underneath then alphagrog under the floss, then splash return.
    Works ok for me.

    Should have said you would have to stop the fish exiting through the hole some how.
    John

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  15. #8
    Senior Member Rank = Supreme Champion Ajm's Avatar
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    I had a ibc for my fry . I had a 2 inch tap and used that as a bottom drain to a diy sieve (john1) then pumped over a shower sat on of the cage . I cut the half the lid off but 1 thing I remember with mine was yes the tap was 2 inch but the inside of the tank was a weird shape/size . I cut a a piece of the scrap lid and used ct1 to stick that in place and ct1 a 2 inch tank connector on the tank side so I could have a long pipe with holes drilled along it so crap could get thought but the fry couldn't. Worked a treat

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  17. #9
    Senior Member Rank = Rokusai KiOgon's Avatar
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    Not a IBC but I ran my QT for a year without bottom drain, then converted it the next year - what a difference - would never do it without again. Feeds into a home made Vortex, a 80L dustbin with a EZ style upflow K1 in the centre, works deliciously, once a week clean out - simple pumped out to home made bakki shower, (Stewart Garden Troughs) with Queni's bakki house media, all water parameters as good as it gets
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  19. #10
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Love these DIY filter systems, works wonders.
    John

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  21. #11
    Senior Member Rank = Yonsai Martin59's Avatar
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    I have this sieve which isn’t being used at the moment, do you think it would be ok for the mechanical side of the filter on my IBC tank if so has anyone got any ideas how I could utilise it on a gravity fed system, as this unit is meant to be pump fed.
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  23. #12
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Not too sure how they work Martin,could you pump feed it from an external pump then over a shower or bio.
    John

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  25. #13
    Senior Member Rank = Yonsai Martin59's Avatar
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    That’s John that’s what I was thinking, putting a pump from the bottom drain to the sieve then gravity return to the tank. Dose anyone see any problem with this.
    I’m also thinking of building a in tank moving bed something similar to the ones used for tropical and marine tanks, but on a larger scale using K1 micro.
    How much K1 micro do you think I will need considering it’s going to be a quarantine/hospital tank.
    Many thanks Martin.

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  27. #14
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Cant say how much k1 you would need Martin but they say the more the better.
    If you raised the pump up a bit so it's not pumping too much height so as not to loose its efficiency.
    John

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  29. #15
    Senior Member Rank = Yonsai Martin59's Avatar
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    Thanks John, that’s a good idea, if I position the pump just below water level it will always be primed and only need to pump water to a hight of around 60cm, that’s about 2 feet in a language we understand ��
    Got some materials being delivered tomorrow as I’m going to insulate and clad it as it’s not the prettiest thing to look at.
    I’ll post some pics of my progress.

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  31. #16
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    In my moving bed, I have 40litres of standard k1 (we'll knock off K1 that coastal koi sell).

    It's kept my 1.3k litre QT running well, even when it's been over stocked due to emergency treatments.

    The best thing I did was to fishless cycle the whole set up for a few weeks before the fish went in. I find with smaller bodies of water things can go downhill very quickly, especially when they're still going through NPS. So doing that made everything really smooth sailing once fish stated going in and having to start treatments for various parasites almost immediately.

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  33. #17
    Senior Member Rank = Yonsai Martin59's Avatar
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    Quote Originally Posted by Twhitenosugar View Post
    In my moving bed, I have 40litres of standard k1 (we'll knock off K1 that coastal koi sell).

    It's kept my 1.3k litre QT running well, even when it's been over stocked due to emergency treatments.

    The best thing I did was to fishless cycle the whole set up for a few weeks before the fish went in. I find with smaller bodies of water things can go downhill very quickly, especially when they're still going through NPS. So doing that made everything really smooth sailing once fish stated going in and having to start treatments for various parasites almost immediately.

    Sent from my Pixel 8 using Tapatalk
    Thanks for the advice, the reason I was going to use K1 micro is because it is small but has a good surface area so it can go into a smaller container as I’m intending it to go into the tank. I think your idea of a fishless cycale is a very good idea thanks for that.

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  35. #18
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Keep us posted ( with pics ) of the build as would be interested to see it develope Martin.
    John

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  37. #19
    Senior Member Rank = Yonsai Martin59's Avatar
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    My ibc tank so far.
    All timber framing done and installed. The back and side is clad in 18mm obs board, as I won’t see it. The rest will be clad in feather edge board, to match the fence and filter shed.
    Attached Images Attached Images

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  39. #20
    Looks good mate, what insulation is that youíve added? Iíve got an IBC moving bed and Iím planning to clad and insulate this year, so will do similar!


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