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  1. #1
    Senior Member Rank = Sansai Martin59's Avatar
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    Drum filter advice please

    Iíve been given the go ahead to upgrade my filter system, by she who must be obeyed.
    At the moment I have a Nexus 300 fed from the bottom drain but it has never been able to deal with the fines in the pond so Iím thinking of putting a stand alone drum filter in front of the Nexus. I know there are drop in drums you can get for the Nexus but what I want to do is remove the eazy from the Nexus and convert the inner chamber into a K1 moving bed like the outer chamber is, so the whole of the Nexus will be a bio filter.
    I have a budget of £1700 for the drum.
    I have looked at the Draco drum Solum 25 and the Aqua Forte Drum Filter which is much cheaper. Both have a similar spec. So has anyone had any dealings with these filters or any thoughts on them. Or another drum with a similar spec.
    Any help would be greatly appreciated as I have never had a drum filter before.

    Many thanks..



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  3. #2
    Senior Member Rank = Yonsai Tropheus's Avatar
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    I don't have experience of those, but I do have experience of DVS/Queni Koi. I would recommend a QK drum over both of those. They are hard to fault and back up service is superb.

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  5. #3
    Senior Member Rank = Sansai Martin59's Avatar
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    Thanks for the reply Ttopheus.
    l will check it out, does it have a smaller spec to the ones I found and in the same price range.

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    Senior Member Rank = Yonsai Tropheus's Avatar
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    This one seems to be a similar spec - https://queni-koi.co.uk/filtration-c...m-filter-p6686

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  9. #5
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Hi Martin,
    I have been running the solum 25 on a 3000 gal pond for a few years now.
    Only problem I have had is the float switch failing which can happen with any drum.
    Not saying this is the best buy as it is the only one I have had experience with and they are made very near to me.
    John

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  11. #6
    Senior Member Rank = Sansai Martin59's Avatar
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    Hi John thanks for your reply.
    My pond is about 9000 gallons do you think it would cope with that. It does say in the description it’s for ponds up to 10,000 gallons, but I’m always wary off what some manufacturers claim.
    I do like the look of them and it is made in the UK, so getting spare parts shouldn’t be a problem.

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  13. #7
    Senior Member Rank = Sansai Martin59's Avatar
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    Hi Torpheus.
    Thanks for the link. It looks a nice piece of kit and well made.
    My only concerns are it says it is suitable for small ponds and my pond is 9000 gal so not overly small, do you think it would cope with that.
    Also the filter mesh is 120 microns which seems a bit big, do you know if they do a replacement mesh of about 60 to 70 microns for that model.


    Thanks Martin.

  14. #8
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    If going for the Draco drum, you definitely want the mesh to be 120 microns. It will struggle with the flow if smaller. I changed the mesh on my Solum 16 from 50 microns to 70 microns and the improvement in flow was noticeable.

    It does sounds to be too small for your size of pond though.

    You'd probably need two Solum 25's for your size of pond. Plus a bigger bio filter (unless it's only lightly stocked).

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    Last edited by Twhitenosugar; 24-09-2023 at 10:06 AM.
    13,000L fibreglassed raised pond with window

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  16. #9
    Extreme Koi Member Rank = Fry nbaker's Avatar
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    I think you would need the Draco Solum 70 which is suitable for up to 16,000 Gallons, where as the Solum 25 is only suitable for up to 8,000 Gallons and it is always best to over filter.

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    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    I never knew Draco did a 70. Just had a quick look and that looks much better able to handle the needed flow rate.

    I noticed it still came with a 50 microns mesh. Still seems too small to me and I would still increase that to 70 - 100.

    Sent from my Pixel 4a (5G) using Tapatalk
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  20. #11
    Senior Member Rank = Sansai Martin59's Avatar
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    The Draco Solum 70 is way out my price range, I’ve only got a budget of £1,700 for the drum.
    I think I will contact Draco tomorrow because they do say in their blurb the 25 can handle ponds up to 10,000 gal. I know you should always over size your filter system but that’s the budget I’ve got so I’ll have to do the best I can with it.

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  22. #12
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    another for the QK25,
    had mine running for a couple of years now and i'm very happy with it.
    the only thing to be aware of is if you mount an amalgam UV in it.
    it degrades the drum seal unless you shield itr from the UV rays....but nearly all other drums will do this too...



    Last edited by davethefish1; 24-09-2023 at 01:57 PM.

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  24. #13
    Senior Member Rank = Sansai Martin59's Avatar
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    Very nice setup you’ve got there mate and so clean, I think I need to tidy mine up a bit.

    The QT25 has a good flow rate at 25,000 litres per hour. Do you think it could cope with a 9,000 gal pond
    and how is it dealing with fines with the 120 micron mesh that is fitted.

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  26. #14
    Extreme Koi Member Rank = Adult Champion NickK-UK's Avatar
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    Quote Originally Posted by john1 View Post
    Hi Martin,
    I have been running the solum 25 on a 3000 gal pond for a few years now.
    Only problem I have had is the float switch failing which can happen with any drum.
    Not saying this is the best buy as it is the only one I have had experience with and they are made very near to me.
    I've run a Solum16 for a few years, the main trouble points seem to be:
    * Controller box (big box) isn't really outdoor waterproof (I've had one replaced)
    * Cable box (small box) isn't really waterproof (although this is protected as it's under the rim it still gets moisture)
    * Floatswitch can get moisture in
    * Drum motor can fail due to moisture ingress (it's in the drum wet area rather than outside)
    * Needs setting up on a completely flat slab to prevent warping and stress on welded joints that cause them to split over time.
    * 50 micron drum can calcium carbonate clog (hard water area using mains water wash) and bio film can also cause clogging reducing flow rate.

    I've operated mine both pump fed and now as gravity fed with the change in float system.

    I've got a thread in the product review sub-forum that chronicles my experiences.
    14000l eco pond, my mutts: 2x Chargoi, 3x Doitsu, 1xTancho, 1xSanke, 1xKujaku, 1x Hi Utusri

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  28. #15
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    Hi Martin, I wouldn't go with dealers volumes and my opinion a 25 would be too small for 9k gals.
    How many bottom drains have you?
    How many pumps are you useing?

    If two pumps you could use the 25 to pump to shower.
    Keep the nexus going with another pump to return so you would have two system's.

    Or even the drum straight to return if you didnt have a shower.
    John

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  30. #16
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    As I said I run solum 25 on 3000 gals and it cleans every 30 to 40 mins.

    I changed the mesh to 120 micron and didnt notice any difference.

    If that is your budget i dont think you will get anything much bigger than a 25.
    It would work but may take a bit longer to get there, what size pump you useing?
    John

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  32. #17
    Senior Member Rank = Sansai Martin59's Avatar
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    Hi John, thanks for the reply.
    My pond is basically two ponds in one, a formal and a ornamental pond, there is a wall dividing the two so the koi can’t get in and eat all the pond plants but it is still one body of water.


    There is a bottom drain in the formal pond feeding the Nexus and a skimmer going to a Eazypod, returned via a waterfall to the ornamental pond. There is also a protein skimmer that does a good job taking out the doc’s. So that’s my setup at the moment.


    If I put the drum after the Nexus, so the Nexus was taking out all the larger bits of waste, leaving the drum to take care of the fines. So the setup would be, bd-Nexus-drum-return.
    Do you think that would work using the 25


    Thank Martin.


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  34. #18
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    Quote Originally Posted by Martin59 View Post
    Very nice setup you’ve got there mate and so clean, I think I need to tidy mine up a bit.

    The QT25 has a good flow rate at 25,000 litres per hour. Do you think it could cope with a 9,000 gal pond
    and how is it dealing with fines with the 120 micron mesh that is fitted.
    no way a QK25 or any 25,000lph drum will cope will cope with 9000 gallons,
    my QK25 only just copes with 2500 gallons...

    you need to factor things in like treating for blanket weed, and high feeding in summer...
    you need to be looking at a 50,000 lph drum minimum imo...

    are you running a 9,000 gallon pond off one bottom drain and a nexus?

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  36. #19
    Senior Member Rank = Sansai Martin59's Avatar
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    I have one bottom drain feeding a Nexus 300, and the skimmer feeding a Eazypod and 20 koi,
    a lot of them I’ve had for over 23 years. I’ve used this setup on all four ponds I’ve had. All have been a similar size.

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  38. #20
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    Quote Originally Posted by Martin59 View Post
    I have one bottom drain feeding a Nexus 300, and the skimmer feeding a Eazypod and 20 koi,
    a lot of them I’ve had for over 23 years. I’ve used this setup on all four ponds I’ve had. All have been a similar size.
    obviously works well for you if you've used them on ponds for 23 years.
    i'd say you have no problems with weed then or the nexus easy would be choked.

    if you're only pulling 10,000 -13,000 lph through the nexus, turn over once every 3-4 hrs?
    maybe you will get away with a small drum if you don't have much of an issue with solid waste?

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