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Thread: Filter upgrade

  1. #21
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    Hmm.

    Did he say how much the mesh would be? And also is it a big faff to get the drum out and the mesh off and the new mesh on tight?

    I'm tempted to go down this route. But just don't want to go to a big effort If I'm still in pretty much the same situation after.

    Fancy having a go and telling me how you get on Filter upgrade

    Sent from my Pixel 4a (5G) using Tapatalk
    Last edited by Twhitenosugar; 29-03-2021 at 10:55 AM.
    13,000L fibreglassed raised pond with window

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  3. #22
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Some good advice above Mark,I sold my Nexus 3oo kept the bio and made a bio box and bought a Solum 25,think you've seen mine.

    But, the other advantage with a drop in is if something goes wrong you can easily and quickly go back to the ordinary Nexus.
    That's the thing with mechanical drums they can and will eventually go wrong and things wear out,where as a Nexus lasts for ever.
    John

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  5. #23
    Senior Member Rank = Mature Champion dbs's Avatar
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    Quote Originally Posted by Twhitenosugar View Post
    Hmm.

    Did he say how much the mesh would be? And also is it a big faff to get the drum out and the mesh off and the new mesh on tight?

    I'm tempted to go down this route. But just don't want to go to a big effort If I'm still in pretty much the same situation after.

    Fancy having a go and telling me how you get on Filter upgrade

    Sent from my Pixel 4a (5G) using Tapatalk
    I am discussing mesh with them currently, long story, but the crux of it I changed my mesh on the weekend, done with drum in situe, a couple of dozen screws, took less than 1/2 hour and I made sure to really take my time

    Sent from my SM-G998B using Tapatalk

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  7. #24
    Senior Member Rank = Yonsai MARKG71's Avatar
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    Quote Originally Posted by john1 View Post
    Some good advice above Mark,I sold my Nexus 3oo kept the bio and made a bio box and bought a Solum 25,think you've seen mine.

    But, the other advantage with a drop in is if something goes wrong you can easily and quickly go back to the ordinary Nexus.
    That's the thing with mechanical drums they can and will eventually go wrong and things wear out,where as a Nexus lasts for ever.
    Hi John,
    Ive been looking at all options and due to the position of my incoming pipe from the bottom drain and the space is limited. I am struggling to fit the Solum16 and the smallest bio with enough space for the pipework. The fact I’m looking an ASHP before next winter makes things harder due to the pipework directions.
    Its looking like keep the Nexus and add a Draco Drop in, like John stated, there’s nothing to go wrong on the Nexus and it’s working fine biologically, I’m still on the K1 that came with it so space to add more as my fish grow.
    12’500 Litre - bottom drain - lined pond
    Nexus 220 + Draco2 - Jebao 12000 - EA UV

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  9. #25
    Senior Member Rank = Supreme Champion RS2OOO's Avatar
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    Quote Originally Posted by Twhitenosugar View Post
    Hmm.

    Did he say how much the mesh would be? And also is it a big faff to get the drum out and the mesh off and the new mesh on tight?

    I'm tempted to go down this route. But just don't want to go to a big effort If I'm still in pretty much the same situation after.

    Fancy having a go and telling me how you get on Filter upgrade

    Sent from my Pixel 4a (5G) using Tapatalk
    I was hoping you would do it first to be honest ha ha.

    Sent from my Pixel 4a using Tapatalk

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  11. #26
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    Ha ha.

    Looks like DBS beat us to it.

    I just have visions of it going horribly wrong then I'll be without a drum and cursing that I ever touch the damned thing.

    Sent from my Pixel 4a (5G) using Tapatalk
    13,000L fibreglassed raised pond with window

  12. #27
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    Quote Originally Posted by RS2OOO View Post
    I was hoping you would do it first to be honest ha ha.

    Sent from my Pixel 4a using Tapatalk

    Quote Originally Posted by Twhitenosugar View Post
    Ha ha.

    Looks like DBS beat us to it.

    I just have visions of it going horribly wrong then I'll be without a drum and cursing that I ever touch the damned thing.

    Sent from my Pixel 4a (5G) using Tapatalk
    there you go lads, easy peasy lemon sqeez... eer maybe not so easy

    https://www.koiphen.com/forums/showt...change-and-mod

    how about going with a 120 micron mesh get even more lph...?

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  14. #28
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    I think I understand naoki's YouTube videos better than I understood those instructions Filter upgrade

    But it does sound like the new mesh did reduce clean frequency and didn't affect water quality from what I can make out.

    Sent from my Pixel 4a (5G) using Tapatalk
    13,000L fibreglassed raised pond with window

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  16. #29
    Senior Member Rank = Yonsai MARKG71's Avatar
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    Following much thinking I’ve followed Johns advice and opted for the Draco 2 drop in which was delivered last weekend by Tony from Draco himself. Installed the drum following the tips given and it’s now been running for a week. I am dumbfounded by the difference it’s made, my water is so clear, wish I’d done it earlier! Oh and to celebrate, I have just added 3 new koi, Yamabuki, kujaku and a goshiki.
    Attached Images Attached Images
    12’500 Litre - bottom drain - lined pond
    Nexus 220 + Draco2 - Jebao 12000 - EA UV

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  18. #30
    Senior Member Rank = Jussai g mac's Avatar
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    Know what you mean, I used to think my water was clear with my old filter but now the drum has been running for a while the water just looks so polished

    Nice fish, love the Goshiki.

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  20. #31
    I know what you both mean. When I swapped out my Nexus’ for the drums each drum did about 200 cleans in 24 hrs then fell back to about 75.

    The difference was amazing and, its a cliche I know, after a few days the fish seemed livelier, more responsive and hungrier ��

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  22. #32
    This photo that shows how much muck gets through a pump fed Nexus. I took it when I was considering upgrading my systems to drums and weighing cost vs benefits.

    My old system had several Nexus 300s, 2 Cetus Sieves and a Ultra Bead on the heat pump (still in use) and all on separate pumps.

    I was shocked. It shows one outlet flowing into a 60micron plastic oil barrel filter mesh that I bought on eBay.

    I realise gravity Nexus’ will be much better than pump fed but imo they will never come close to drums….

    757AF46E-8414-48BB-8EB2-8A443D3D41B8.jpg

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  24. #33
    Quote Originally Posted by WaterRhino View Post
    This photo that shows how much muck gets through a pump fed Nexus. I took it when I was considering upgrading my systems to drums and weighing cost vs benefits.

    My old system had several Nexus 300s, 2 Cetus Sieves and a Ultra Bead on the heat pump (still in use) and all on separate pumps.

    I was shocked. It shows one outlet flowing into a 60micron plastic oil barrel filter mesh that I bought on eBay.

    I realise gravity Nexus’ will be much better than pump fed but imo they will never come close to drums….

    757AF46E-8414-48BB-8EB2-8A443D3D41B8.jpg
    This was only after 2-3 mins…..

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  26. #34
    Quote Originally Posted by RS2OOO View Post
    What makes you say it is too small for your pond?

    How often is it cleaning in the height of summer?

    I'm running a Draco 2 on a 12k litre pond, cleaning every 6 mins in summer, and I am looking to upgrade to the Medius which is essentially a Solum 16 with a bio section added in.

    every 6 mins , mines every hour in peak summer and even then the water level in the bio doesnt drop.

    is your drum matched in size to your pond mate? sounds likes its very over loaded to run ever 6 mins,

  27. #35
    Quote Originally Posted by davethefish1 View Post
    there you go lads, easy peasy lemon sqeez... eer maybe not so easy

    https://www.koiphen.com/forums/showt...change-and-mod

    how about going with a 120 micron mesh get even more lph...?

    ive got 50 micron screen on my drum and can easily run upto 120,000lph massively oversized for my pond and its my own design i made.

  28. #36
    Senior Member Rank = Supreme Champion RS2OOO's Avatar
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    Quote Originally Posted by markini5 View Post
    every 6 mins , mines every hour in peak summer and even then the water level in the bio doesnt drop.

    is your drum matched in size to your pond mate? sounds likes its very over loaded to run ever 6 mins,
    Yeah mine has to be overloaded.

    When you think about it I added a drop in drum because the Nexus was completely blocked within 24 hours in summer, so if the Nexus was too small for the pond then adding a drum into the Nexus was never going to fully solve that problem hence the frequent cleaning.

    Really I need a physically bigger drum that can take at least 15k lph.

    Sent from my Pixel 4a using Tapatalk

  29. #37
    Quote Originally Posted by RS2OOO View Post
    Yeah mine has to be overloaded.

    When you think about it I added a drop in drum because the Nexus was completely blocked within 24 hours in summer, so if the Nexus was too small for the pond then adding a drum into the Nexus was never going to fully solve that problem hence the frequent cleaning.

    Really I need a physically bigger drum that can take at least 15k lph.

    Sent from my Pixel 4a using Tapatalk
    large drum and bio is the way to go, im considering going for 25 micron screen on my drum

    the higher the turn over rate, the less particles you will have in in the pond overall, this is what i experienced between my mk1 drum to my mk2 drum as the mk1 drum was limited to 20k lph where the new drum upto 120k lph , the downside i have 1 bottom drain and 1 skimmer line , but due to my drum being 650mm dia its sits along way below the water line, so the flow of water will always be much greater than smaller drums sitting 300mm below water level . if that makes sense.

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  31. #38
    Quote Originally Posted by Twhitenosugar View Post
    A few reasons I suppose.

    My one also cleans every 4 - 6 minutes in summer. To me this is excessive, especially as I'm on a water meter. And will only get worse as my fish get bigger.

    Also because I have to operate the drum so the float switch is hanging below the bracket it's meant to be secured in. I have to clamp (lightly) the cable for the float switch rather than the stem of the float switch.

    If I were to secure the float switch by the stem (as I believe it's meant to be set up) it'd be going off every 6 minutes now, let alone summer. I believe this is because it's operating at the max flow it can handle. I do pressure wash it occasionally which tbf does help.

    And I don't think these issues are because the drum is too high, as I run the drum so the water level on the dirty side is right on the lip of the waste chute.

    Also because I tend to get suspended fines (white wafty ones) build up in the water. Going on the size of the particles, these should definitely be removed by the drum. But I can't up my flow any more to remove them as the drum would be in cleaning mode an insane amount of time.



    Sent from my Pixel 4a (5G) using Tapatalk
    can you not switch from float switch to a manual timer ? thats what i use on my drum , even though my pond is well stocked my cleaning cycle in summer is every hour and uses 2 1/2 - 3 litres per wash . winter every 3 hours due to being unheated

 

 
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