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Control Pond Algae

Algae control in ponds is a very important part of maintaining a healthy pond. In very high densities, algae blooms may discolor the water and out-compete, poison, or asphyxiate other life forms. Some algae are toxic to humans and dogs. Excessive algae growth can indicate problems with water quality. Water can become unsuitable for fish, swimming, and other animals.

Nutrient pollution such as excessive nitrogen, phosphorous, carbon, and potassium can originate from fertilizer, farm runoff, septic systems, and decomposing lawn clippings. Prevention along with a proper pond algaecide should be employed for optimum pond algae control.

For pond algae or lake algae control, we recommend the copper based algaecide Mizzen® to help control nearly all types of Planktonic Algae, Filamentus Algae, and Chara. Mizzen® is an EPA approved algaecide that is safe for most fish, however, it is not recommended for use where there are Koi, Trout or Channel Catfish. Simply spray Mizzen® evenly across the surface or spot treat algae mats as needed. No swimming restrictions apply.

There are some products available that will slow the regrowth of algae. Pond control products such as SparKlear® and PhosControl® will reduce the nutrients available to the algae.

If you have any questions or would like to speak to us about pond algae control, please feel free to call us at: 1-877-428-8898

Application Tips:

For recurrent algae blooms in your pond or lake, we recommend that you re-apply Mizzen® in 2 – 3 week intervals.

  • For severe algae blooms, avoid oxygen depletion by applying to one half or one third of the area at a time.
  • Allow 10 – 14 days between the applications.
  • Break up any large mats of algae before applying the algaecide.
  • Apply Mizzen® when algae first appears, and when the water temperatures are above 60° Fahrenheit.

Refer to label for dosage rates and other instructions.