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  1. #1

    Drum canít handle green water

    My Draco has kept going into fault mode and turning off. Itís a real pea souper and very frustrating as the filter isnít doing its bio bit either. Iíve found this morning that the UV bulb has blown. Fortunately the quartz sleeve is dry so just a replacement bulb. Iíve also added a hefty dose of Envirex.

    Iím am now thinking that the Solum 16 just isnít big enough to deal with approx 23k litres. I thought that having it run slowly at about 8-10k litres an hour would be fine but it appears not! Iím guessing Iím going to have to opt for a bigger drum, maybe a Burton.

    Has anyone elseís drum struggle with green water??



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  3. #2
    Senior Member Rank = Adult Champion Twhitenosugar's Avatar
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    Have you tried swapping the mesh on the screen for a less fine mesh?

    If not I'd suggest swapping it over first. I did on mine from a 52 microns mesh to a 74 micron mesh. It dramatically improved the drum and it can now handle a higher flow rate and cleans less regularly.

    If you have already done that, then I think the best long term solution is to swap the drum out for something theat can handle much more flow.

    It sounds like you were always going to struggle as the 16 is only good for around 12 - 13k lph imo.

    In fact I think even if you had gone for the 25 it'd still be maxing out what it can realistically handle... going on the presumption they you want to turn your pond over every hour or so.



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

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  5. #3
    Yes already changed the mesh about a month ago but it seems the combination of pea souper and leaves is proving too much.

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  7. #4
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    not really sure why a heavy dirt load would make a drum go into fault?

    i've had some real humdingers on my pond after an aquasource resolve treatment in the spring,
    made the pond a right mess with chunks of algae floating around everywhere.

    all that happens is the drum washes more often as it gets blocked quicker...
    until the pond is clear.
    having a UV not working and green water algae shouldn't affect a drum much as the algae are less than 2 microns in size and only get removed by follocation when the clump together.
    change the UV bulb and see how the water clears up...

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  9. #5
    Quote Originally Posted by davethefish1 View Post
    not really sure why a heavy dirt load would make a drum go into fault?

    i've had some real humdingers on my pond after an aquasource resolve treatment in the spring,
    made the pond a right mess with chunks of algae floating around everywhere.

    all that happens is the drum washes more often as it gets blocked quicker...
    until the pond is clear.
    having a UV not working and green water algae shouldn't affect a drum much as the algae are less than 2 microns in size and only get removed by follocation when the clump together.
    change the UV bulb and see how the water clears up...
    The drum is going every 30 seconds so it shuts down to protect itself from burning out. I believe most have this function, if not they aren’t worth having!

  10. #6
    Senior Member Rank = Adult Champion Gazkoi's Avatar
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    If you’re upgrading and budget permits - Oase every time for me.

    Cheers

    Gaz
    Hobby and business gone but when youíre hooked youíre hooked.

    Always happy to help!!

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  12. #7
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    Quote Originally Posted by DiabloDave View Post
    The drum is going every 30 seconds so it shuts down to protect itself from burning out. I believe most have this function, if not they aren’t worth having!
    if your pond has that much leaf fall and crap,
    that your drum is running every 30 seconds, you need a bigger drum...much bigger i'd say like a QK50,000 or profidrum 65/40

    or cover/net the pond in autumn to catch the leaves if it is a seasonal problem

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  14. #8
    The pond it netted all year round! I’ve had ponds for over 30 years and never had a problem like this. Damn those trees, they don’t provide any shade in the summer to stop the algae boom but come autumn they’re shedding right in it. Typical eh?

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  16. #9
    Extreme Koi Member Rank = Adult Champion NickK-UK's Avatar
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    Quote Originally Posted by DiabloDave View Post
    My Draco has kept going into fault mode and turning off. Itís a real pea souper and very frustrating as the filter isnít doing its bio bit either. Iíve found this morning that the UV bulb has blown. Fortunately the quartz sleeve is dry so just a replacement bulb. Iíve also added a hefty dose of Envirex.

    Iím am now thinking that the Solum 16 just isnít big enough to deal with approx 23k litres. I thought that having it run slowly at about 8-10k litres an hour would be fine but it appears not! Iím guessing Iím going to have to opt for a bigger drum, maybe a Burton.

    Has anyone elseís drum struggle with green water??
    I had green water for most of the summer (no UVC), full sun and a solum16 with a decent rate of water through.

    I found it could handle water flow but it's never going to clear the soup. Green water algae is far finer than 50 microns.

    Only once the UVC was installed did the water clear.

    Sounds like a large filter basket on the front (for leaves) is probably the cheapest option.
    14000l eco pond, my mutts: 2x Chargoi, 3x Doitsu, 1xTancho, 1xSanke, 1xKujaku, 1x Hi Utusri

  17. #10
    Quote Originally Posted by Gazkoi View Post
    If you’re upgrading and budget permits - Oase every time for me.

    Cheers

    Gaz
    20years ago I’d have agreed with you. Unfortunately since then I’ve bought products out of desperation when nothing else has been available- every single time I’ve had issues and can’t ever see me buying anything with OASE on it again. I had one of their expensive pumps (circa £850) and in the space of 5yrs I had 4f failures requiring replacement under warranty. The last time the impeller decided to implode on the bearing and that cost me about £150 iirc. That then failed.

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  19. #11
    I sold my Oase UV last year, as I had plants last year. Comes this spring I got rid of the plants as the soil was smelling bad - then came the shock a string algae bloom! Added Resolve, string algae gone followed by green soup! For several weeks I couldnít see past 1 inch under surface. I gave up and even added loads of clay saying to myself I had a mud pond! Finally I really really got fed up and ordered an almagam UV - waited for two weeks got told by seller it was out of stock! The day I got my card refund the water cleared like magic - from green water quickly to brown then to gin clear. All the dead algae clogged up filter big time. Two days later fish spawned!

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  21. #12
    Senior Member Rank = Supreme Champion RS2OOO's Avatar
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    I've read of similar struggles with the Solum 16.

    Then when I enquired with Draco about buying the bigger model he told it that would be overkill and the 16 would be plenty adequate.

    When I queried that it may not be enough Tony said I could opt it with a higher micron mesh and it would be plenty adequate.

    Maybe you could consider changing mesh as opposed to the entire drum?

    Sent from my Pixel 6a using Tapatalk

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  23. #13
    Extreme Koi Member Rank = Supreme Champion john1's Avatar
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    I use the solum 25 on 3000 gals and it isnt too big at all,I changed the mesh to I think 110 micron and didnt notice any difference on clarity but it doesnt clean as often which is good,cleans about every 30mins in summer lot less in winter.

    I also made a new float switch with a longer reach to lower it down further.
    John

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  25. #14
    Extreme Koi Member Rank = Adult Champion NickK-UK's Avatar
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    Currently on a ~60 minute trigger cycle (I've got the 99mins switched on anyway) with a 50 micron drum.

    I've taken the mesh off before for an acid rinse to get the scale/film off. In short it's a faff but doable (it takes ages to get it all aligned).
    14000l eco pond, my mutts: 2x Chargoi, 3x Doitsu, 1xTancho, 1xSanke, 1xKujaku, 1x Hi Utusri

  26. #15
    I’ve got up early this morning and given it a really good pressure wash. Maybe biofilm is part of the problem. We shall see. If it improves the situation then maybe a weekly pressure wash is required.

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  28. #16
    Totally fed up today - every day the drum has stopped working even after I replaced the water solenoid and drum motor. I’ve noticed on occasion that the drum turns and the water doesn’t come on. I’m still getting washes that are about every minute and the drum just can’t handle it so shuts down. I’ve got a 120micron mesh on there too which has made bugger all difference.

    I’m wondering if I should change to a 300micron like I had on my sieve - I was completely happy with the water quality but got fed up with the maintenance of cleaning it every day.

    The thing is this drum isn’t even cleaning and I’m trying to rectify issues every day. What is the point? I’m actually wishing I’d given up the pond when we moved.a totally had enough now and it isn’t fair on the fish.

  29. #17
    Senior Member Rank = Jussai Djstiles999's Avatar
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    You have my sympathy, I had 3 months of drums not working, running dry etc but finally sorted and settled now although I’m going to upgrade the drums shortly.

    As well as the usual things I also flushed out the bottom drain and pipework with a drain cleaner from Amazon that attached to the pressure washer?

    if you have green water that’s going to block up your mesh I would’ve thought, or at least put a film on it which won’t help much

    Sometimes good to take it one step at a time otherwise you feel you’re going round in circles, certainly wears you down but it’ll get there in the end
    13,243 gallons, Filtreau HF30ís K1 capacity of 1,400l, Bakki Shower, BHM and understanding wife

  30. #18
    So I’ve had an interesting chat with a dealer today who I’ve bought all my Draco kit from. He said that the cheaper mesh seems to cause problems and he’s had over a dozen people swap out the mesh for an online alternative and they’ve had issues resulting in dry pumping (no sniggering at the back). These issues have been rectified by going to Draco for their 77 gauge mesh.

    He isn’t a overly impressed by Draco at the moment though and is aware of quite a few issues!
    Last edited by DiabloDave; 22-09-2023 at 12:57 PM.

 

 

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