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It’s been cold where I live. Should I stop with my bacteria now? | Pond & Lakes Q&A


It’s been cold where I live. Should I stop with my bacteria now?

It’s been cold where I live. Should I stop with my bacteria now?
Kevin – Saugatuck, MI

In bacteria paradise, the temperature in your backyard pond would never fall below 50 degrees Fahrenheit. When water temperatures drop below 50 for any sustained period of time, the bacteria call it quits for the season.

But just because you’ve been feeling the cold for a few days, remember: it takes water longer to respond to changing temperatures. Thus, when it’s below 50 degrees outside for a lengthy stretch, your pond water may not have fallen as far – and your bacteria may be doing just fine. To get the most accurate reading you can, consider buying our Pond Logic® Floating Pond Thermometer. It’ll give you up-to-the minute readings, making it easy to monitor the health of – and the need for – your favorite bacteria.

When your pond is still in the above-50 degree range, we strongly recommend the continued use of Pond Logic® PondClear™ Beneficial Bacteria, and Pond Logic® MuckAway™ Pond Muck Reducer. These two products help to maintain healthy bacteria levels in your pond, which will help to reduce organics, excess nutrients and noxious odors, while breaking down muck and keeping your pond water clear.

Once your pond water drops below 50 degrees, you can safely suspend bacteria treatments. But when the temperatures start to rise again in the spring, be prepared to start back up – and get your pond water in great shape for another season.

Pond Talk: Do you monitor your pond’s water temperature for optimum bacteria use?

Pond Logic® MuckAway™ Pond Muck Reducer

4 Responses

  1. Will any unused bacteria treatment (PondClear & MuckAway) still be good next season?

  2. Pond Guy: This is the second year for my 5,000 gallon pond in Colorado, but the first year that string algae showed up. I have tried to stay away from using too many chemicals and only add 2 oz. of “One Fix” a week and two cups of white vinegar to keep the Ph level down (I am on a well). I test my water weekly and my nitrate and ammonia levels were “0” all summer. At the peak of the summer, about 80% of my pond is covered by lily pads. The water is very clear. My questions is this, is the best way to solve this problem by purchasing a UV light, or is there another less expensive and less time consuming solution? Thanks, Bob

    • Hi Bob,

      A UV light has no affect on string algae because it doesn’t pass through the light. Remember that some string algae is good for a pond as long as it isn’t taking over. Normal pH is between 6.5 and 8.5 so if your pond can maintain that range there is no need to make adjustments to the pH. Algae control chemicals are meant to be used as needed to regain control so if algae is at a minimum there is no need to consistently add algae control. Instead I would reccomend natural bacteria which will help reduce nutrients in the pond. Natural bacteria in combination with a minimum fish load and good plant coverage is the key to a balanced and healthy pond.

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