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  1. #1

    Fry and bottom drains

    Hi all

    what size would you think fry would need to be before ending up in the filter box?

    Or any ideas what I could do to prevent this? I was thinking about a floating net? But was hoping for some other ideas

    thanks in advance



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  3. #2
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    The bottom drain on my QT came with a dome and a fry grid which is basically a 300 mm x 300 mm sheet of clear perspex with a load of 6 mm? holes in it. The grid just needs to be held in place with some CT1 sealant or similar fish safe sealant or you could just look on ebay and get some stainless perforated plate which would probably be heavy enough to hold itself down when you allow for the suction effect of the water going down and through your bottom drain?

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    Senior Member Rank = Yonsai MikeMack's Avatar
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    Either this...

    https://norfinenets.co.uk/product/ko...r-19-diameter/

    or:
    An upside down stainless colander.
    A bucket with loads of holes - that'd need weighing down though.
    A net with the handle removed.

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  7. #4
    Extreme Koi Member Rank = Adult Champion bowsaw's Avatar
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    even fingerlings can make the trip to the filter, how large is your bd gap?
    the slow pond build thread

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  9. #5
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Quote Originally Posted by bowsaw View Post
    even fingerlings can make the trip to the filter, how large is your bd gap?
    Is that a question or a chat up line you smooth talking bugger?

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  11. #6
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    What size bottom drain have you?
    What size are the fry?

    I will explain what I did with my 4ins bottom drain,but the same can be done with 2ins etc.
    Remove dome cover then fit apropriate size pipe into the hole so that the top is just above water level.
    When pipe is correct size with an angle grinder cut slots with a very narrow disc ( i used a concrete disc ) along the length but not the full length so as to keep some strength ie staggered a bit.
    Then fit pipe job done.

    If you have very small fry like i had 6 week old ones use some of this.

    https://www.ebay.co.uk/itm/Quality-B....c100005.m1851

    Wrap some round the pipe they wont get through it,brilliant stuff and quite strong.
    John

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  13. #7
    Senior Member Rank = Supreme Champion freddyboy's Avatar
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    Quote Originally Posted by Frimley Koi keeper View Post
    Is that a question or a chat up line you smooth talking bugger?
    Haha Brill Fry and bottom drainsFry and bottom drainsFry and bottom drains

    Sent from my SM-G960F using Tapatalk

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  15. #8
    Extreme Koi Member Rank = Supreme Champion Frimley Koi keeper's Avatar
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    Quote Originally Posted by freddyboy View Post
    Haha Brill Fry and bottom drainsFry and bottom drainsFry and bottom drains

    Sent from my SM-G960F using Tapatalk
    Thanks Fred

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