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I have algae growing all over the place. I keep using chemicals but they don’t seem to last long. What else can I do? – Ponds & Lakes Q & A

The best way to beat algae is with the Airmax® Ecosystem PROactive approach.
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I have algae growing all over the place. I keep using chemicals but it doesn’t seem to last long. What else can I do? Howard – Dallas/Ft Worth, TX

Beat Your Greens
As we approach our warmer spring and summer months, you may find yourself watching in awe as algae takes over your pond at an almost impossible rate. What is going on in your pond that is making it punish you so? Let’s take a look at the cause of algae and your approach on treating it.

Ready, Get Set, React
Unless you find your new algae bloom a welcome addition to your pond, you will want to get rid of it as soon as possible. Algaecides like Algae Defense® and Cutrine®-Plus Granular are great products to eliminate existing algae blooms. If you have trout, Koi or goldfish in your pond, you will want to use a non-copper based product like Clipper™ to do the job. While these products address the current outbreak in your pond, they will not treat the source of the issue or prevent future occurrences and they require repetitive treatments. Even after the algae bloom is killed, you will still have to do some legwork in terms of removing dead plant matter. Leaving dead algae in your pond will only hinder your quest for a clear pond by providing even more algae food in the form of decaying plant matter. For these reasons, using chemical applications to fight algae is referred to as a reactive approach.

Going Proactive
As the saying goes, “The way to algae’s heart is through its stomach”. While we might not be current with our sayings, this one still holds some truth. Eliminate the food sources available to algae and you will send it packing. Performing regular maintenance in your pond to prevent algae growth is a proactive treatment. Algae can utilize both available sunlight and nutrients held in your pond to stage its backyard assault. By adopting a proactive routine, you can keep your pond clean and clear all season long and save some money on repetitive chemical treatments.

The best step you can take in establishing a Proactive treatment plan is to implement aeration in your pond. Sub-surface aeration systems like our Airmax® Aeration Series will circulate your pond’s water column and infuse it with dissolved oxygen, which on its own will promote the colonization of beneficial bacteria. These beneficial bacteria will break down that same nutrient load your algae utilizes, thereby discouraging continued growth. The bacteria in products like Pond Logic® PondClear™ and MuckAway™ will reinforce the natural bacteria in your pond, ensuring that your pond is able to break down nutrients faster than they are being introduced into the pond. Without an available nutrient load, algae will have to utilize sunlight to generate food. By adding pond dye, you can not only beautify your pond, but also limit the amount of light able to penetrate the water surface. Pond dyes like Pond Logic® Nature’s Blue™, Twilight Blue™, or Black DyeMond™ give you the option to choose the color that best suits your pond while still obtaining a natural look. If you would like more information on choosing the right shade for your pond, click HERE.

We have packaged a collection of products to take the guesswork out of completing your pond maintenance and appropriately named it the Pond Logic® ClearPAC® . The ClearPAC® contains PondClear™ Beneficial Bacterial, Nature’s Blue™, EcoBoost™ Bacteria Enhancer and Algae Defense® . These products are designed to kill algae, clear water, reduce muck, and shade your pond combining the immediate results of reactive treatments with the economical preventative results of a balanced proactive approach.

Pond Talk: Have you used MuckAway™ in you pond or lake? Were you happy with your results?

Pond Logic® ClearPAC® - DIY Complete Pond Care Program

13 Responses

  1. I have a 1/2 acre pond. I am interested in making it healthy enough to drink (after using a filter) if we ever need to. Recently I put acidophilis and a barley straw tea in the pond and, it helped! Your products MuckAway and Pond Logic sound interesting to me. Are they truly natural? I am also interested in aeration. If the pond is completely open to the sun will it always grow algae? Especially in the warmer weather we seem to be having. I do not want to put dye in the pond. Is this a natural plant based dye?

    • Pond Logic PondClear & MuckAway ARE natural bacteria products. They DO, however, include “Do not apply to water that will be used for human consumption” on their product labels. Their Pond Dye is not intended for potable water either.

      An aeration system would be an excellent step towards creating naturally healthy water. Installing an aeration system in your pond can eliminate pond muck & clarify water just by circulating & oxygenating your pond. Generally speaking, ponds that have full sun exposure are more prone to algae and plant growth so finding an alternative source for shade may assist in preventing some growth in your pond.

      • Hello! Just found this blog and could use some help. We have a 1000 gallon pond with 2 pumps, 2 waterfalls and a bog stream, skimmer and several koi and goldfish. Every year we drain the pond in the spring, fully powerwash the algae and muck out and refill. We use barley straw in the bog, a combination of salt and bacteria weekly, we have a UV light (which we turn off for a day or 2 post bacteria treatment) and use algaefix on occasion. We cleaned out our pond on April 7 and here we are less than 3 weeks later and it is covered in algae again. Aaaack!!! The water is crystal clear but the rocks are covered in the bright green stuff. Can you give any advice on how to keep the algae from getting out of control on the rocks? We shut down the pumps occasionally and use green clean but that only works on the rocks in the stream and the falls, not on the ones down deeper. Thanks for any advice!!

      • Your crystal clear water is letting a lot of sunlight into the pond which is allowing algae to grow. You can add some floating plants or Pond Logic Pond Shade to shade the pond. Another cool thing you should take a look at is ion clarifiers. While your UV lights treat any green water that passes through the UV unit, an ion clarifier releases algae killing ions into the water column effectively combating both suspended algae AND the green fuzz you get on your submerged rocks.

  2. Hello,
    We had snails in the waterfall last fall but don’t see any now. We live in Iowa and this is our first pond (we bought this home with a lovely back-yard waterfall and koi pond). Since we don’t see them yet, is it likely that the snails over-wintered, or are they more likely gone? Also, if plant growth is not showing, is it likely that they did not make it either? All of the fish, a frog, and the water lilies appeared to live, so we’re happy about those!
    Thank you for your guidance.

    • Hi Stephanie,

      I would give the plants an snails just a little more time. Though we’ve had some nice days we’ve also have a lot of rain and cool weather mixed in. Chances are your plants and snails are still around but just not ready to sprout up for the season.

  3. How much blue do we need to stop the algae without the blue coming through our purification system

    • Hi Michael,

      There isn’t an exact formula to stopping algae with pond shade since it does not actually kill algae. The darker the better. It is usually reccomended to have the dye dark enough that you don’t see more then a few feet deep into the water.

    DAN O

  5. I read your letter about algae in the pond. I have treated the water with muck out to no avail. I have two filter systems in the water running 24/7. I have an air bubbler going all the time too. The water is still not clear. I have about 18 goldfish, ducks and many birds using the pond so I don’t want to use anything that will harm them.
    Please advise.

    • Hi Dale,

      I’m not sure how big your pond is but it sounds like you may have a lot of waste accumulating in the pond. I would suggest the Defense Pac with has the natural bacteria to aid in waste removal. Also, how often are you cleaning your filters? Over cleaning your filters will wipe out your bacteria colonization making your filtration systems inefficient. Only rinse or flush the filters enough to remove the heavy debris. Never powerwash or swap out the filter pads. If the fitration system is running well and sufficient for your pond size the next step is to use a UV clarifier. The reason I suggest that as a last option is becuase a UV shouldn’t need to be used. More then likely there is something else out of balance within the pond. Please keep us posted on the situation or contact us with further questions. Good Luck.

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