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After a really warm day, I have algae floating on my pond. How do I control it? | Ponds & Lakes Q&A

Q: After a really warm day, I have algae floating on my pond. How do I control it?

Q: After a really warm day, I have algae floating on my pond. How do I control it?

Steve – Grand Rapids, MI

A: Plants in your vegetable garden love the warm sunshine—and so do the plants in your pond or lake, including algae. Warm temperatures and bright sunshine trigger green growth, so it’s critical to keep floating and submerged algae under control before it grows out of control.

Here’s what we recommend:

1. Treat the Growth

First, use an algaecide to kill the green stuff. You can treat floating algae with a fast-acting liquid spray like Pond Logic® Algae Defense® Algaecide with Treatment Booster™ PLUS, which treats algae floating around the perimeter of your pond. Simply spray it on with a pressurized sprayer to combat floating and bottom-growing algae.

Submerged algae can be treated with sinking granular products, such as Cutrine®-Plus Granular Algaecide. It works well for algae submerged deep in your pond or lake, such as Chara. It’s best distributed on a calm day via a granular spreader in the morning before mats form.

2. Remove the Dead Algae

Once the algae is dead, you should remove it. Why? Because that decomposing foliage turns into pond muck, which feeds future algae blooms throughout the season. Use a pond skimmer, like The Pond Guy® PondSkim™ Debris Skimmer, or a lake rake, like Pond Logic® Pond & Beach Rake, to prevent that muck from accumulating.

3. Add Beneficial Bacteria

Three days after you’ve used algaecides, treat your pond with PondClear™. It contains beneficial bacteria that gobbles through the organic material that’s suspended in the water column. The result is a lake filled with clean, clear, odor-free water—and a healthy ecosystem for your game fish and other pond inhabitants.

4. Shade Water with Pond Dye

Finally, be sure to add blue or black pond dye, like Pond Logic® Pond Dye, to your lake throughout the spring and summer. By reducing the amount of sunlight that shines through the water and stimulates green growth, you will ultimately reduce the amount of algae.

Pond Talk: What lakeside recreational activities do you have planned this summer?

Eliminate Algae Quickly - Pond Logic® Algae Defense® & Treatment Booster™ PLUS

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