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Thread: UV

  1. #1

    UV

    Can someone tell me please, if it's worth using 2 UV's inline on the return feed to the pond?

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  2. #2
    Extreme Koi Member Rank = Adult Champion GHOSTDOG's Avatar
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    Depends on how big your pond is? But generally people don't need to,as you'd be reducing flow rate by adding more restrictions as the water goes though another uv etc


    new pond,starting digging next week UV

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  3. #3
    Quote Originally Posted by GHOSTDOG View Post
    Depends on how big your pond is? But generally people don't need to,as you'd be reducing flow rate by adding more restrictions as the water goes though another uv etc


    new pond,starting digging next week UV

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    It's 8000 Litres. I've recently fitted Evolution Aqua uv 25 thinking it would be good enough. But with all this sun, the water has turned green

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  4. #4
    Extreme Koi Member Rank = Adult Champion GHOSTDOG's Avatar
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    I'm using a 55w on 14000 litres
    I'm in full sun all day as well
    And all good
    What filters are you using?



    new pond,starting digging next week UV

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  5. #5
    Quote Originally Posted by GHOSTDOG View Post
    I'm using a 55w on 14000 litres
    I'm in full sun all day as well
    And all good
    What filters are you using?



    new pond,starting digging next week UV

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    Easy pod

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  6. #6
    Quote Originally Posted by jyeo1973 View Post
    Easy pod

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    I can't really add anymore filtration. I've just been flushing the filter every week, which has help clear it a lot. I just assumed it's the UV not being strong enough?

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  7. #7
    Extreme Koi Member Rank = Adult Champion GHOSTDOG's Avatar
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    UV

    When's the last time you changed the bulb? Ideally needs a new one every 6 months
    And you would need to be using a 4000-6000lph pump so the water gets some time passing the uv


    new pond,starting digging next week UV

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  9. #8
    Extreme Koi Member Rank = Adult Champion GHOSTDOG's Avatar
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    Is you pond new? And this is your first summer?


    new pond,starting digging next week UV

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  11. #9
    It's new mate. Only bought it 3 weeks ago. That's why I'm thinking it needs to be stronger

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  13. #10
    Quote Originally Posted by jyeo1973 View Post
    It's new mate. Only bought it 3 weeks ago. That's why I'm thinking it needs to be stronger

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    The pond is 7 years old

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  15. #11
    Extreme Koi Member Rank = Adult Champion GHOSTDOG's Avatar
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    What were you using before?
    And have you had the green water before this heat wave?


    new pond,starting digging next week UV

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  16. #12
    Quote Originally Posted by jyeo1973 View Post
    The pond is 7 years old

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    It happens every summer. So this spring I changed the UV to the new Evo ones

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  17. #13
    Can't remember the make. But I'm sure it was 55 watts last time I replaced the tube

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  18. #14
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    Strange mate?
    I would think it's strong enough to cope
    What size pump are you using as if turning your pond over every hour not every 1.5-2hrs that could be the problem?
    I've only had my pond nearly 2 years,so you probably know loads more than I do anyway lol


    new pond,starting digging next week UV

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  19. #15
    Hahaha. It's a super fish 8000 series. The people I bought everything from (Koi Water Barn) said that it would be right for the filter & amount of water. The water is starting to come clearer again. So I'm probably being impatient as usual lol. I read about uv's & a friend told me bigger is better lol

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  20. #16
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    UV

    Give it a few days then mate
    should be about right with that pump as you'll lose a bit though the pipes and bends
    I'm using a old kockney Koi Yamitsu 55w UV,I brought off a friend got the spares to rebuild it as with the hose tails removed and a rubber boot fitted it's got hardly any restrictions
    I've got another one as well and a spare aqua evo 55w,it looks better but looks way more restrictive


    new pond,starting digging next week UV

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  21. #17
    My problems started a few weeks back when I was on holiday. I never fitted an overflow on the pond. Lots of rain & the pod let loads of the K1 out & blocked the return pipe. So no filter for 10 days. I'm guessing it takes a good few filter cleans to get back on track. It was crystal clear before I went away. Note to self be patient lol

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  22. #18
    Extreme Koi Member Rank = Supreme Champion pondwithnoname's Avatar
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    Check the uv unit is installed the right way, Manky sanke recently advised that some units can develop air locks if they are not oriontated correctly thus reducing their efficiency.
    Alias PWNN - Steve
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  24. #19
    Extreme Koi Member Rank = Adult Champion GHOSTDOG's Avatar
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    Yeah probably will mate
    I'm away for 10 days soon so I've got a bit of worry about it


    new pond,starting digging next week UV

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  26. #20
    I think submersible UVs can be fitted to an EasyPod can't they?
    If you fit an amalgam in there there are a few pros and cons ....
    Much better efficiency (more dead bacteria for the power drawn)
    Bulbs last several years rather than six months
    No significant restriction on flow
    Hurts your pocket initially (but that's paid back over time)
    Last edited by admin; 30-06-2017 at 02:32 PM.

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