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What can I do to prevent string algae from growing in the winter? | Decorative Ponds & Water Gardens Q & A

Q: What can I do to prevent string algae from growing in the winter?

Q: What can I do to prevent string algae from growing in the winter?

Laura – Hattiesburg, MS

A: Even in the cold of winter, string algae can grow in your water garden. All that green nuisance needs to thrive is the right amount of nutrients and sunlight. So what can you do to prevent it? You have three options in your pond management toolbox: Seasonal Defense, barley straw extract, and a three-in-one pond tool.

Boost Your Bacteria

First of all, you’ll need to control the nutrients – or the food that the algae eat – in your pond. Because the beneficial bacteria that break down those nutrients go dormant in the winter, now’s the time to add some Pond Logic® Seasonal Defense® (as long as your pond isn’t frozen over, of course). It contains bacteria that prefer cooler temperatures. They’ll accelerate the decomposition of leaves, scum and sediment that feed algae, reducing its growth to a minimum.

Add Barley Straw

If you have a small water garden, like a koi pond that’s less than 10,000 gallons, Pond Logic® Barley Extract provides an all-natural solution for maintaining clean, clear water throughout the winter. Available in bales, pellets and as an extract, it works by releasing compounds that improve water clarity, leaving you a clean and healthy pond. Read more about how barley extract works here. The extract form is easy to use: Pour directly into the water and repeat every few weeks.

Manually Remove It

Should string algae form, you can manually remove it by wrapping it around an algae brush, like the one included in the The Pond Guy® 3-in-1 Interchangeable Pond Tool, and yanking it out of the water. The telescoping handle will add 5 feet to your reach, allowing you to reach those hard-to-access patches of weeds.

Unfortunately, if ice is covering your pond, there’s not much you can do to remove that string algae. Plan on removing it during your spring clean-out process. The sun will return soon enough!

Pond Talk: How do you prevent string algae from growing in the winter?

Naturally Clear Pond Water - Pond Logic® Barley Extract

My pond has some filamentous algae growth around the edges. It’s too cold to treat, right? | Ponds & Lakes Q&A

Q: My pond has some filamentous algae growth around the edges. It’s too cold to treat, right?

Q: My pond has some filamentous algae growth around the edges. It’s too cold to treat, right?

Jeff – Hanahan, SC

A: Cold-weather algae. It’s the worst. And, unfortunately, you can’t treat it right now because the temperatures are too low. Your pond or lake’s water temps need to be higher than 60°F before you can start treating the green stuff with algaecide.

So until things heat up, you have two options:

  1. Rake It Out: If you can safely access and maneuver around your pond, grab your Pond & Beach Rake and get to work skimming and pulling that filamentous algae out of the water and up onshore.
  2. Add Some Color: Pond Dye will limit the amount of sunshine that reaches the algae. Without enough sun, the algae can’t survive. So toss a Pond Dye water-soluble packet or some liquid concentrate into your pond – and your problem is solved!

Once your water temperatures rise above 50°F, start adding PondClear™ & MuckAway™ to the pond. The beneficial bacteria will clear the water and start breaking down the debris and nutrients that are feeding that troublesome algae.

Pond Talk: How much time do you spend puttering around your pond or lake in the winter?

Protect Your Pond in All Seasons - Pond Logic(r) Pond Dye Quarts

Algae Growth During the Winter – Water Garden Q & A

Algae Growing in a Water Garden During Winter.

Q: I shut my water garden down for the winter, but I still see some algae growth. Can algae grow in cooler temperatures?

A: In some cases, a pond that stays clean and clear through the summer can blow up into an algal nightmare in the fall. Shutting down your watergarden ceases the flow-through characteristics of the pond. This reduces the amount of filtration that occurs both mechanically (i.e. skimmers) and biologically (i.e. filterfalls). Since there is less flow, it is a good idea to bump up the amount of bacteria in the pond by adding Seasonal Defense® Bacteria with Barley. These bacteria operate in cooler conditions and will greatly reduce the amount of nutrients in the water, and also contains barley straw to naturally help with the algae. Using Oxy-Lift™ Defense® to scrub down your rocks will also help to remove any debris build up.

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