How to clear a green pond?

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PaulVerrall
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My dad's pond is usually crystal clear, he has koi and gold fish.
Two filters and 2 UV
It's just gone green and murkey. What's the best thing to do to clear it, not a lover of the chemical option but will if we have to
BigBen
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Have you replaced the uv bulb? I've just done mine and it's made a bit of a difference.

My pond is disgusting at the moment due to the million goldfish it seems to have now.
Instagram - @the.cornish.fishkeeper
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PaulVerrall
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I'll ask him how old they are. Cheers
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PaulVerrall
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BigBen wrote: Thu Jun 08, 2023 20:11 pm Have you replaced the uv bulb? I've just done mine and it's made a bit of a difference.

My pond is disgusting at the moment due to the million goldfish it seems to have now.
Both UV are new, 8 weeks old and running fine
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fr499y
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green water can be cured with barley extract.
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