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My pond was a mess, so I drained and refilled it. Now I have algae. What do I do? | Decorative Ponds & Water Gardens Q & A

Q: My pond was a mess, so I drained and refilled it. Now I have algae. What do I do?

Q: My pond was a mess, so I drained and refilled it. Now I have algae. What do I do?

Beth – Benton, AR

A: Sometimes it’s just easier to start from scratch – particularly if you have a disaster in your pond.

A complete water change rids your water feature of excess organic waste, clears up murky water (briefly, as you’ve discovered) and gives you a chance to start over with a clean slate. Those are some worthy benefits!

The urge to purge, however, has its drawbacks. If you’ve completely drained the water from your pond and scrubbed everything clean, you’ve also stripped a lot of the beneficial bacteria that was working to help clean the pond in the first place! The algae that’s growing now is most likely due to fish waste and a lack of mature filtration.

To return your pond to its crystal-clear state, here’s what we recommend.

  1. Decide how bad it really is: Believe it or not, some algae in your pond is natural and beneficial as it helps filter the water. Make sure your expectations are in line with the reality of having a pond, and then let the pond take its natural course with a little help from you. But be patient! The Nitrogen Cycle will eventually help clear things up naturally – but it takes time. If your water quality begins to suffer a few weeks in, think about doing a partial water change and/or following these additional suggestions.
  2. Treat if necessary: If the algae is becoming excessive, treat the algae growth with an algaecide in the morning or evening when water temperatures are cooler. In addition, make sure you have adequate aeration to ensure oxygen levels stay high for your finned friends.
  3. Seed Your Filter Media: To kick-start the regrowth and reproduction of beneficial bacteria in your pond, add some DefensePAC® to your pond and filter. The package contains Nature’s Defense®, which instantly begins breaking down dead organics in the pond; Clarity Defense®, which helps clear debris suspended in the water column; and Muck Defense®, which attacks buildup on the liner, rocks and gravel.
  4. Condition the water: When you refill your pond with water, be sure to use Stress Reducer PLUS to condition the water and reduce fish stress. It helps your fish form a beneficial slime coat that’s lost from stress or handling, and it also makes tap water safe by working to remove chlorine, chloramines and heavy metals.
  5. Learn from the situation: Instead of letting your pond fall into its “mess” state again, figure out why it wound up in that situation in the first place. Are there too many fish living in your pond? Is your filter too small for your pond’s volume and fish load? Do you need more plants growing in and filtering the water? Does your pond receive too much sun or rain runoff? Dig down to the root cause of the problem and correct it!

In the future, if you find your pond’s water quality waning, consider doing a partial water change instead of a complete water change. A little fresh water will go far to clear things up without having to start completely over!

Pond Talk: Have you ever had to restart your pond from scratch?

Immediately Remove String Algae - CrystalClear® AlgaeOff®

I spend a lot of time trying to kill algae, and sometimes it doesn’t work. Do you have any tips? | Ponds & Lakes Q&A

Q: I spend a lot of time trying to kill algae, and sometimes it doesn’t work. Do you have any tips?

Q: I spend a lot of time trying to kill algae, and sometimes it doesn’t work. Do you have any tips?

Vince – Columbia City, IN

A: Frustrating, isn’t it? You spend hours upon hours pondside, dosing the water with algaecides and raking out algae-feeding plant matter and detritus, only to see the green menace return weeks – if not days – later. Is there a way to control the nuisance algae that’s turning your pond into pea soup?

You bet. Below are our top recommendations for battling the algae. If you follow these guidelines, you’ll have that green menace under control in no time.

#1 – Treat Only Actively Growing Algae
When using algae control products in your pond or lake, the algae must be present and actively growing. Why? Because the chemicals need to make direct contact with the tiny organisms and absorb into their cells for them to be effective; if there’s no living algae, the chemicals will land in the water and become diluted, and therefore ineffective when the green stuff blooms.

#2 – Treat When Weather Is Favorable
Algae can grow in cold temperatures – even frigid, depending on the species – but algaecides aren’t so tolerant. The pond water must be warmer than 60°F for the chemicals in them to work. Apply your algae treatment on a sunny, mild day when rain is not expected in the immediate forecast. This will allow the chemicals to adequately absorb into the algae. As always, read the product label for instructions and specific temperature requirements.

#3 – Treat Only a Third at a Time
When temperatures heat up and the algae dies off, that combination of warm water and decaying plant matter reduces the amount of oxygen available to fish and other living critters in the pond. Keep them in an oxygen-rich environment by treating the pond in small sections and wait 7-10 days before moving to the next section. In addition, keep your aeration system or fountains running during treatment to continue circulating and oxygenating the water.

#4 – Read the Product Label
Different algaecides have different active ingredients, inert ingredients and specifications, so always read your product’s label for appropriate protective equipment and application rates. Pay special attention to warnings concerning water use and restrictions in ponds used for irrigation, drinking and swimming, as well as in ponds that house certain types of fish. If you have trout, which are sensitive to copper-based treatments, test the carbonate hardness levels and ensure they are above 50 ppm prior to treatment. If they’re above that, use another treatment, like Hydrothol®, that contains no copper.

#5 – Follow Up with Airmax® Ecosystem Pond Management Program
Algaecides are a great tool that can temporarily clear up pea soup water, but they do little address the actual problem causing the algae – which is excessive nutrients and organics. By following your treatment up with proactive pond management practices, such as aeration and natural water treatments like MuckAway™, you will reduce the accumulation of dead organic material, which will help to keep your water clear season after season. Check out the Airmax® Ecosystem™ – Proactive Pond & Lake Management video below for more information or view the article here.

Pond Talk: Do you have any additional tips for successful algae management?

Eliminate Algae and Chara Fast - Pond Logic Algae Defense

How are algae able to grow in the winter when everything else is dormant? | Ponds & Lakes Q&A

Q:How are algae able to grow in the winter when everything else is dormant?

Q: How are algae able to grow in the winter when everything else is dormant?

Patrick – Vandalia, IL

A: Algae can be tough little buggers. An estimated 72,500 algal species exist worldwide, and some of them can thrive in inhospitable conditions, including areas with ice and snow. With a handful of nutrients and a little bit of light, they’re able to grow – even in the 39 degree water under the ice in your lake.

But if your lake’s water is clean and clear during the spring and summer, how can it explode with algae in the winter?

Food Aplenty

Algae feed on byproducts of decomposing organic debris, like phosphorous and nitrogen, in the water. During the warmer months, natural bacteria would typically break down these nutrients, leaving little food for the organisms. But in the cooler months, those bacteria go dormant. That means the algae enjoy a feast – and a population explosion.

If you keep a hole in your lake’s ice, you can help control the nutrient density with a product like Pond Logic® EcoBoost™. This bacteria enhancer, which has no temperature restrictions, binds suspended organics while providing trace minerals to fish. Simply mix it with water and pour it into the lake.

Let There Be Light

Algae also require sunlight to thrive – but not much. Even through a clear, solid sheet of ice, algae can get enough light to use for photosynthesis. When that light is impeded, however, the algae won’t grow as quickly.

A layer of thick snow cover is Mother Nature’s way of preventing light from penetrating the water, but you can also use pond dye, to block those rays. The blue or black dye comes water soluble packets that are simple to use: Just toss two packets per acre into the lake, and the shade will inhibit algae growth.

Algae’s Benefits

Believe it or not, algae growth in the winter does have its benefits. It helps to filter the water, and on warmer days it’s a great snack for your fish. Plus, when the algae photosynthesize, they give off oxygen as a byproduct – which is then available for your fish (and other aquatic critters) to breathe.

Don’t worry: The algae won’t take over your pond like it does in the summer. It can grow, but the cold temperatures aren’t ideal for explosive outbreaks. If you’re concerned, however, try some EcoBoost and Pond Dye. They’re safe for your fish, and they’ll keep that algae under control until spring.

Pond Talk: Have you seen algae growing beneath the ice in your pond or lake?

Shade & Protect Your Pond - Pond Logic® Pond Dye Packets

How are algae able to grow in the winter when everything else is dormant? | Ponds & Lakes Q&A

Q:How are algae able to grow in the winter when everything else is dormant?

Q: How are algae able to grow in the winter when everything else is dormant?

Patrick – Vandalia, IL

A: Algae can be tough little buggers. An estimated 72,500 algal species exist worldwide, and some of them can thrive in inhospitable conditions, including areas with ice and snow. With a handful of nutrients and a little bit of light, they’re able to grow – even in the 39 degree water under the ice in your lake.

But if your lake’s water is clean and clear during the spring and summer, how can it explode with algae in the winter?

Food Aplenty

Algae feed on byproducts of decomposing organic debris, like phosphorous and nitrogen, in the water. During the warmer months, natural bacteria would typically break down these nutrients, leaving little food for the organisms. But in the cooler months, those bacteria go dormant. That means the algae enjoy a feast – and a population explosion.

If you keep a hole in your lake’s ice, you can help control the nutrient density with a product like Pond Logic® EcoBoost™. This bacteria enhancer, which has no temperature restrictions, binds suspended organics while providing trace minerals to fish. Simply mix it with water and pour it into the lake.

Let There Be Light

Algae also require sunlight to thrive – but not much. Even through a clear, solid sheet of ice, algae can get enough light to use for photosynthesis. When that light is impeded, however, the algae won’t grow as quickly.

A layer of thick snow cover is Mother Nature’s way of preventing light from penetrating the water, but you can also use pond dye, to block those rays. The blue or black dye comes water soluble packets that are simple to use: Just toss two packets per acre into the lake, and the shade will inhibit algae growth.

Algae’s Benefits

Believe it or not, algae growth in the winter does have its benefits. It helps to filter the water, and on warmer days it’s a great snack for your fish. Plus, when the algae photosynthesize, they give off oxygen as a byproduct – which is then available for your fish (and other aquatic critters) to breathe.

Don’t worry: The algae won’t take over your pond like it does in the summer. It can grow, but the cold temperatures aren’t ideal for explosive outbreaks. If you’re concerned, however, try some EcoBoost and Pond Dye. They’re safe for your fish, and they’ll keep that algae under control until spring.

Pond Talk: Have you seen algae growing beneath the ice in your pond or lake?

Shade & Protect Your Pond - Pond Logic® Pond Dye Packets

Is there an ideal temperature to treat algae? | Pond & Lake Q&A

Is there an ideal temperature to treat algae?

Is there an ideal temperature to treat algae?

Crystal – New Baltimore, MI

It depends what you mean by the word “treat.” If you’re looking to throw a party in its honor, pretty much any temperature will do – because algae grows all year ‘round, even during the winter months. But if you’re hoping to give it the kind of treatment that makes it feel extremely unwelcome, you’ll see the best results when water temperatures are at 60 degrees Fahrenheit or higher. When water is warmer, algae tends to thrive. Because it’s thriving, it’s feeding – making it much more susceptible to algaecides.

Because very few of our customers express interest in enhancing algae growth, we’ll assume most readers are in the latter category. And if you are, we have a variety of highly effective options to accomplish your objectives. Algae Defense® with Treatment Booster™ PLUS is among our safest, most effective weapons in the battle against algae. Algae Defense® is a fast-acting aquatic algaecide, and it’s highly effective at eliminating a broad spectrum of pond algae. By including Treatment Booster™ PLUS, which breaks down algae’s natural defenses, this combination packs a particularly effective double-whammy, and makes short work of offending algae blooms.

For spot-treatment of algae growth, we also recommend Cutrine®-Plus Granular . Formulated to make quick work of both surface and bottom-forming algae, this safe, powerful algaecide does double-duty by both killing existing algae, and inhibiting its future growth.

While some pond owners prefer to eschew algaecide and rake algae out manually, the raking-only approach requires much more maintenance and attention. Algae are extremely hearty, and raking leaves trace amounts in the pond, allowing for recurrent blooms. For longer-lasting impact, the ideal treatment includes the use of algaecides, followed by cutting with our weed cutter, raking with our Pond & Beach Rake, and follow-up treatment with natural bacteria to break down any remaining muck.

Give your algae the treatment they deserve before temperatures start to fall – and start next season with a leg up on their plans for next year’s invasion.

Pond Talk: What method of treatment have you used to maintain algae?

Do I Need To Fertilize My Plants And If I Do Will It Encourage Algae Growth? – Decorative Ponds & Water Gardens Q & A

Do I need to fertilize my plants and if I do will it encourage algae growth?

Do I need to fertilize my plants and if I do will it encourage algae growth? Ben – Shelley, ID

Here We Grow Again

Behind the scenes your Aquatic Plants are working hard to filter nutrients from the water in your pond, provide shelter for its residents, and keep algae blooms to a minimum. While this may seem impressive to some, it is hard for most pond owner to get excited about aquatic plants unless they can do all of this work while looking good. Whoever coined the phrase “Looks aren’t everything” obviously never owned a water garden.

If your aquatic plants are failing to impress you can use some plant fertilizer to give them the boost they need to ensure your pond has more buds and less duds this season. The type of fertilizer you use will depend on the type of plants in your pond and how they are implemented.

Liquid fertilizers like Microbe-Lift® Bloom & Grow™ are mixed directly into your pond water, providing a readily available food source throughout the entire pond. This type of application is great for ponds with an abundance of scattered plants, Floating Plants, and plants that are in areas lacking Planting Media.

Concentrated fertilizers like TetraPond® LilyGro™ Tablets and Laguna Fertilizer Pond Spikes are used for potted plants or plants with roots planted in media. Simply push these fertilizers into the planting media and they will gradually release nutrients that your plants. When you are using concentrated fertilizers in your pond, carefully read the directions for each individual product for specific application instructions and warnings. For example, when using LilyGro tablets you will want to place them about 3” away from the crown of the plant to ensure the fertilizer does not burn the roots or stem.

The amount of fertilizer you need and intervals at which you re-apply them will depend on which type you are using and variable factors such as average water temperatures and how many plants are in the pond. Applications can range from once a season to ever 2-4 weeks. Whichever type or brand of fertilizer you use in your pond make sure it is low in or completely free of phosphates which can encourage algae growth. Microbe-Lift Bloom & Grow is an entirely phosphate free product.

Fertilizing your plants will encourage increased growth and color in healthy plants to push them to perform at their best. Fertilizers will not be an effective substitute for gardening know how. If your plants are constantly dieing make sure they are being planted in the right Temperature Zone and are being used in the correct applications. Bog Plants like Dwarf Cattails for example should not be entirely submerged in your pond, tropical plants like Antares should not be planted in cold climates and so on.

Do some homework, read the descriptions and text included with your plants and fertilizers to ensure you select the correct products for you unique water gardening scenario. Once your aquatic plants are established and growing, you can then decide if you need fertilizer to give them a kick in the bud to bloom at their best.

Pond Talk:What aquatic plants do you use in your pond and which types of fertilizers do you use for them?

Fertilizer Pond Spikes

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