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  1. #1

    More Bio filteration

    Currently on my 3000 gallon pond I’m running a Roto concept shower filter with nearly 200 litres of crystal bio media I’ve bought a Aqua forte ultra sieve which I’ll be installing this weekend but I would like to add some more bio filteration in the future something like a moving bed with K1 or a large baki shower.

    any input will be appreciated.

    Current stocking level is 5 small koi about 6”

    thank you



  2. #2
    Extreme Koi Member Rank = Mature Champion pip895's Avatar
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    Puting a moving bed in between the physical filtration and the shower is quite popular but it probably wouldn't work after the sieve because you can't gravity feed after a sieve .

    Would you be able to gravity feed from the new filter into the pond?. If you could, then you could either split your feed or add a second pump after your shower. Another option you could consider is getting a bead filter which would sit between your sieve and shower - in that case you might need to upgrade your pump though. It would improve your physical filtration - beads are second only to drums for water clarity. There are lots of beads around second hand so may not be that expensive.
    6000g in ground koi pond
    +3000g lily/Anoxic pond attached
    29 koi (40 to 65cm)
    Bottom drain, Mid water & Skimmer to Drum
    JBR boichamber->Blue eco 500 pump ->below surface return.
    Blue Eco 240 -> Large MB -> Waterfall -> Planted Anoxic pond (25 baskets)

  3. Thanks crazyreefer Thanked / Liked this Post
  4. #3
    i nearly bought a moving bed filter your reply just came in time.

    i like the idea of a bead filter as you say will help with water clarity and does a bead filter do both mechanical and biological filteration seen a few on eBay for sale I’ll keep a look out for one or just may save up and buy new also are all bead filters the same.

    Thank you

  5. #4
    Extreme Koi Member Rank = Mature Champion pip895's Avatar
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    Beads can be quite expensive new - I would definitely go second hand - if you are prepared to spend that much go for a drum. An econobead or ultrabead with bypass would be good and seem to come up pretty frequently. In terms of media micro K1 will give you slightly better bio and increased flow but perhaps at the expense of a little clarity.

    I will actually be selling my big bead filter in the next few weeks - not sure it would be suitable anyway or if you are local to me - its huge - will take 200ltrs of micro K1 but will be sold empty - I have a drum now so have swapped it out for a moving bed.
    6000g in ground koi pond
    +3000g lily/Anoxic pond attached
    29 koi (40 to 65cm)
    Bottom drain, Mid water & Skimmer to Drum
    JBR boichamber->Blue eco 500 pump ->below surface return.
    Blue Eco 240 -> Large MB -> Waterfall -> Planted Anoxic pond (25 baskets)

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  7. #5
    Drum is good option if bead filters are expensive I’ll look in to drum filters now.

    thats a big bead filter you have maybe a bit too big for me because of the foot print what make of drum filter are you getting

  8. #6
    Extreme Koi Member Rank = Mature Champion pip895's Avatar
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    I have a QK50 - very pleased with it. The bead is big but they are smaller than most filters ( Nexus or multibay for example) and being sealed - can be run between a sieve and shower.

    If you have the cash then drum ( or two lol) to moving bed to shower is the gold standard option.
    6000g in ground koi pond
    +3000g lily/Anoxic pond attached
    29 koi (40 to 65cm)
    Bottom drain, Mid water & Skimmer to Drum
    JBR boichamber->Blue eco 500 pump ->below surface return.
    Blue Eco 240 -> Large MB -> Waterfall -> Planted Anoxic pond (25 baskets)

  9. Thanks crazyreefer Thanked / Liked this Post
  10. #7
    I like the look of the QK50 looks like a quality unit

  11. #8
    how do you intend running the sieve and roto concept?

    Sieve > pump > shower?

  12. #9
    Bottom drain > ultra sieve > Roto concept

    the other line is in wall skimmer > 55w uv

  13. #10
    You're running the roto concept pump fed?

    I only ask as I was wondering about pre-filtration for the roto concept, but mine's gravity fed.

  14. #11
    Gravity fed from bottom drain

  15. #12
    how will you put the sieve in front of the RC then? the sieve exit water level will be far too low to gravity feed the RC?

  16. #13
    I don’t know I’ll have to speak to my pond builder

  17. #14
    Extreme Koi Member Rank = Mature Champion pip895's Avatar
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    If you look on the EA website there is information on how to run a cetus sieve with a nexus using a balance pipe and two pumps. That type of set up would probably work but it seems a bit of a palava.
    I really think the sieve dosent fit in your system very well - a drum on the other hand...
    6000g in ground koi pond
    +3000g lily/Anoxic pond attached
    29 koi (40 to 65cm)
    Bottom drain, Mid water & Skimmer to Drum
    JBR boichamber->Blue eco 500 pump ->below surface return.
    Blue Eco 240 -> Large MB -> Waterfall -> Planted Anoxic pond (25 baskets)

  18. Thanks crazyreefer Thanked / Liked this Post
  19. #15
    Quote Originally Posted by pip895 View Post
    If you look on the EA website there is information on how to run a cetus sieve with a nexus using a balance pipe and two pumps. That type of set up would probably work but it seems a bit of a palava.
    I really think the sieve dosent fit in your system very well - a drum on the other hand...
    i will look into this because I thought gravity fed bottom drain then sieve and last the Roto concept filter

  20. #16
    No, sadly because Both need to be followed directly by the pump (as they both lose about 70-80cm of head, the only way to run them would be a twin pump balanced system as pip895 said.

    I have a roto concept. it's main downside is that it's VERY reliant on water level, if it drops too low, it can't flow enough. How much does a drum drop the level before cleaning? more than 2" and you'll have real problems.

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  22. #17
    Thanks for the heads up I’ll have to look at other options now like a bead filter

  23. #18
    Extreme Koi Member Rank = Mature Champion pip895's Avatar
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    Quote Originally Posted by Mitsufishi View Post
    I have a roto concept. it's main downside is that it's VERY reliant on water level, if it drops too low, it can't flow enough. How much does a drum drop the level before cleaning? more than 2" and you'll have real problems.
    With a drum you can generally set the height of the drop to under 2" but it may not be optimum and could mean very frequent cleaning cycles particularly with a big drum.
    6000g in ground koi pond
    +3000g lily/Anoxic pond attached
    29 koi (40 to 65cm)
    Bottom drain, Mid water & Skimmer to Drum
    JBR boichamber->Blue eco 500 pump ->below surface return.
    Blue Eco 240 -> Large MB -> Waterfall -> Planted Anoxic pond (25 baskets)

  24. Thanks freddyboy, crazyreefer Thanked / Liked this Post
  25. #19
    Or could run the sieve on the skimmer line.

    i have a wall skimmer then UV could I put the sieve between the skimmer and UV

  26. #20
    Extreme Koi Member Rank = Mature Champion pip895's Avatar
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    Is the skimmer 4" gravity fed - if so then the answer is yes otherwise probably not. You could run your new bead on it if it's pump fed though.
    6000g in ground koi pond
    +3000g lily/Anoxic pond attached
    29 koi (40 to 65cm)
    Bottom drain, Mid water & Skimmer to Drum
    JBR boichamber->Blue eco 500 pump ->below surface return.
    Blue Eco 240 -> Large MB -> Waterfall -> Planted Anoxic pond (25 baskets)

 

 
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