How to keep an outdoor Koi pond crystal clear?

koi
Darren asked:


I have tried using barley straw to remove green-water but to no avail. Anyone have any ideas? I would prefer a natural remedy.

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3 comments to How to keep an outdoor Koi pond crystal clear?

  • houseofjoseph2000

    Very difficult.. Keeping the sun off the water helps a lot.. it is the temperature of the water that grows this stuff.. The pros use a filter system and a UV light that kills most of this off quickly.

  • Dreary O'Leary

    It’s hard this time of year with the algae blooms.
    Maturity is the key, and also shade from light.
    Even with U/V and a sand filter you would probably still have problems this time of year – I personally found chemical treatment to be the most effective.

  • Sunshine

    Floating plants that cover 2/3rds of the pond will help.

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