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Reducing Foam Buildup On Your Water Garden’s Surface – Water Garden & Feature Q & A


Picture of Foam on the Water's Surface.

Water Gardens & Features Q & A

Q: Foam seems to buildup on my water’s surface. What is causing this and can I get rid of it? – Tom of Ohio

A: Have you ever walked out towards your water garden and noticed a bunch of foam around where your waterfall comes into the pond? Sometimes this foam can get a little out of control and began to become unsightly.

Foam is the result of an excessive accumulation of organic waste in your pond caused by over population of fish, overfeeding, poor filtration, runoff and various other water quality issues. This foam will mostly occur in agitated water such as around your waterfall. Fortunately, there are a few things you can do to reduce this foam buildup. Some are quick fixes and others are more long-term solutions.

Quick Fix Solutions:

  • Use Shakedown Anti-Foamer - This anti-foamer works quickly to eliminate any foam building. Simply pour it in around foamy areas for immedate, but temporary control.
  • Surface Skimmer – If you have the pleasure of having a skimmer built into your water garden, usually the foam will be pulled right into it.
  • Partial Water Change – Replacing 10-25% of the water every few days until the problem is resolved is one way to dilute the excess organics to help reduce foam.

Long-Term Solutions:

  • Limit the amount of contributing organics by reducing fish feeding and making sure you don’t overload your water garden with fish.
  • Make sure your filtration is adequate for your sized water garden as well as your fish load.
  • Attack and reduce organic build-up an excess waste by using beneficial natural bacterias such as the DefensePAC®.

Hopefully the above suggestions will help you if you are struggling with foam problem.

POND TALK: Do you have a foam problem in your water garden? What did you do to reduce the problem?

Foam is the result of an excessive accumulation of organic waste in your pond caused by over population of fish, overfeeding, poor filtration, runoff and various other water quality issues. This foam will mostly occur in agitated water such as around your waterfall. Fortunately, there are a few things you can do to reduce this foam buildup. Some are quick fixes and others are more long-term solutions.

2 Responses

  1. I have a water feature that includes a waterfall, short stream and two ponds. There are no fish or plants in the feature but I am still getting a lot of foam. It is mainly in the ponds, but also in the stream. I use a defoaming agent which works for a day or two then the foam comes back. Any ideas?

    • Robert,

      Foam occurs when water is mixed with air or simply that the water gets agitated, either by fish or a waterfall. Excessive accumulation of organic waste in the pond will result in foam on a pond’s surface. Even without fish or plants in the pond you can still build up an excess of organics in the pond. Do a partial water change, replacing 10-25% of the water every few days until the problem is resolved. This will help to dilute any excess organics that are present in the pond. Adding beneficial bacteria, such as Nature’ Defense will help to reduce the organics as well.

      Thank you,
      Sue

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