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How to Get Rid of Algae in a Pond

How to Get Rid of Algae in a Pond

There is nothing worse than watching your pond turn green or seeing buildup on your waterfall rocks. For those seeking to learn how to get rid of algae in their pond, there are a variety of products, both chemical and chemical-free, that can help. In this guide, we'll dive into more detail about the best pond algae removers to help keep your pond clean and clear. Most importantly, we'll cover how to remove algae from your pond without harming fish.

Chemical Treatments

If you have an existing algae problem and need to know how to kill algae in a pond quickly, chemical treatments are the way to go. Selecting the best algaecide for your pond will depend on the types of pond algae you are looking to treat. For fine planktonic algae that causes green water, Algae D-Solv or other liquid chemicals are a great option. If you're fighting filamentous (string) algae, then a granular form such as AlgaeOff is more effective since it makes better contact with the algae.

Chemical-Free Options

Keep in mind that while chemicals will help to remove algae from a pond and offer a quick fix, they will not prevent regrowth. Once algae is treated, using proactive products is the key to reducing future growth. If you're continually battling algae or want to know how to get rid of algae in your pond naturally, without the use of chemicals, then read on for options:

  • UV Clarifiers: Installing a pond UV clarifier is an effective way to eliminate discolored water. They are a great option for ponds in full sun to combat excessive sunlight. UV clarifiers are designed to destroy the ultrafine particles that cause discolored water. Once killed, the dead particles clump together and are then removed by your mechanical filter. When selecting a UV clarifier, take your pond and pump size into account. If your pump is too large, the particles will not be exposed to the UV radiation long enough to damage the cell walls. Another thing to keep in mind is that pond UV light bulbs should be replaced yearly – even if they still light up – since they become less effective at controlling discolored water over time.

  • Ionizers: Copper ionizers for ponds are designed to release copper ions into the water to keep it clear and reduce string algae buildup. To release the ions from the anode, ionizers require pumps to have a minimum flow rate. Ionizers can easily be incorporated into new or existing ponds by installing them in-line with plumbing or placing a drop-in model into your pond skimmer.

  • Barley: Barley is the perfect solution for maintaining a clean and clear pond naturally and is safe to use in ponds with fish and other wildlife. Barley can be used during the winter months when other pond treatments are ineffective. Barley products are available in a variety of different forms:
    1. Barley straw for ponds
    2. Barley straw extract
    3. Barley straw pellets

    All forms work to remove algae from your pond and keep it clean and clear for up to six months, so which one you choose largely comes down to personal preference.


  • Beneficial Bacteria: Excess nutrients mixed with sunlight are usually the cause of algae blooms. Nature's Defense and Muck Defense contain beneficial bacteria, which consume the nutrients and other organic material in your pond and convert it into a harmless gas. These products are included in the The Pond Guy DefensePAC along with other products that will keep your pond crystal clear for up to six months.

Wrapping Up

That's everything you need to know on how to get rid of algae in your pond! Remember that proactively managing your pond will help keep it clear so you can spend more time enjoying it and less time cleaning it. If you have any questions or need further help choosing the best pond algae remover for your needs, don't hesitate to contact our customer service team. We'll be happy to assist you!