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Does the type of algae and where it’s growing determine what chemical is needed? | Ponds & Lakes Q&A

Q: Does the type of algae and where it’s growing determine what chemical is needed?

Q: Does the type of algae and where it’s growing determine what chemical is needed?

Pete – Addison, AL

A: When battling algae, you have the upper hand if you understand the enemy. What type of algae is it? How does it behave? What are its strengths and weaknesses? Before we get in to how to treat the green menace, let’s discuss the different varieties and where they live in an aquatic ecosystem.

Algae Explained

In a large pond or lake planktonic algae, filamentous algae and chara, are the most common types of algae you’ll come across.

  • Planktonic algae, the source of algae blooms, are floating, microscopic plants that color pond water shades of green, blue-green, brown or variations in between. In controlled amounts, this type of algae can actually be beneficial. It can shade the pond’s bottom, preventing subsurface nuisance plants from growing.
  • Filamentous algae are single-celled plants that form long, visible chain, threads or filaments. These threads, which start growing along the bottom of the lake in shallow water or on rocks or other aquatic plants, intertwine and form mats that resemble wet wool. When these mats rise to the surface, they’re commonly referred to as pond scum.
  • Chara is a gray-green branched multicellular algae that has 6 to 16 leaf-like branchlets that grow in spirals around the stem. Though bottom-growing chara superficially resembles terrestrial plants, it lacks flowers, true leaves and roots. It has a skunky, musty, garlicky-type smell and has a crunchy- or grit-type texture, thanks to calcium carbonate deposits on its surface.

In general, algae will grow just about anywhere sun penetrates the pond. Surprisingly, algae has some benefits: The tiny plants feed fish and make great homes for micro- and macro-invertebrates like bugs and worms. But algae has its definite drawbacks. Besides being unsightly and odorous, uncontrolled blooms can cause oxygen depletions, affect fish health and, in extreme circumstances, cause fish to die.

Vanquishing the Menace

The key to successfully treating algae – whether planktonic, filamentous or chara – is to make the most contact between it and the algaecide. Rather than dumping the chemical into one place in the pond, which will only kill algae in that small area, it needs to be evenly dispersed.

Floating mats of filamentous algae and suspended planktonic algae are best treated with liquid mixtures, like Algae Defense® and Clipper™, that are sprayed directly over the area with a pond sprayer. To treat extra thick mats, stick the top of the sprayer into the mat itself to get the chemical to the deeper portion of the problem.

For bottom-growing algae, use granular algaecide, like Cutrine®-Plus Granular and Hydrothol, and distribute it with a granular spreader. It’s the preferred choice because the granules will sink over the algae bed and make maximum contact with it.

Follow up by raking out any decaying or dead debris with the Pond & Beach Rake, setting up an aeration system and adding natural bacteria, such as the types found in ClearPAC® PLUS Pond Care Package.

Pond Talk: How much time do you spend battling algae in your pond or lake?

Spray Directly Onto Algae Blooms - Pond Logic® Algae Defense®

I have scum on the surface of my pond like last year but I can’t scoop it out, is it algae? | Ponds & Lakes Q&A

Q: I have scum on the surface of my pond like last year but I can’t scoop it out, is it algae?

Q: I have scum on the surface of my pond like last year but I can’t scoop it out, is it algae?

Clare – Westford, VT

A: It sounds like that strange stuff floating in your pond is pollen – particularly if you’ve had the same issue at about the same time in previous years. How do you identify it and get rid of it? Read on to learn more about fixing your pollen problem.

Just on the Surface

Looking like an oil slick floating on top of your pond, the pollen’s hue may vary in shade from white to yellow to green, particularly if there’s a little algae mixed in. The substance will break apart if you run your fingers through it, and it often forms a circle around aeration plates.

The tiny pieces of pollen stay on the surface thanks to something called surface tension. Pollen is light, and when it lands on still water that’s not moving it remains there. Unless something breaks the water tension, like rain or the splash from a fountain, the pollen will continue to float and coat the water surface.

Saying ‘Goodbye’ to Pollen

If you want to get rid of that unsightly pollen, here’s what we recommend:

  1. Add Aeration: Aeration, like our Airmax® Aeration Systems, churns and moves the water below the surface, and that action will help break down the surface tension from the bottom up. We offer a range of aerator sizes to fit any pond, from small ornamental features to large water gardens or fish ponds.
  2. Add Some Splash: While the aerator cycles the subsurface water, a decorative fountain like our AquaStream™ Fountains, or even a garden hose (in desperation!) will break the water tension and dissipate the pollen. Check out the different styles, sizes and spray patterns of our fountains – they look great and work hard!
  3. Wait It Out: Pollen will eventually dissipate with the changing of the season or after a heavy rain. If you’re patient and wait it out, the problem will resolve on its own.

Green Be Gone

Is the pollen in your pond a bit green? You could be battling an algae and pollen problem. In addition to resolving the situation with aeration and a decorative fountain, use Algae Defense®. It’s a fast-acting, algae-killing liquid formula that can be applied directly to your pond with a sprayer – so it’ll destroy the green stuff and dissipate the pollen.

Pond Talk: How has pollen been treating your pond (and your seasonal allergies!) this year?

Improve Your Pond's Appearance - The Pond Guy® AquaStream™ 1/2 HP Fountain

The ice just melted and algae is already growing. Can I use an algaecide this early in the year? | Ponds & Lakes Q&A

Q: The ice just melted and algae is already growing. Can I use an algaecide this early in the year?

Q: The ice just melted and algae is already growing. Can I use an algaecide this early in the year?

Jeff – Avilla, IN

A: After a dreary, cold winter, growing greenery is a welcome sight – unless it’s algae in your pond. Bright sunshine, warmer temperatures, and an abundance of nutrients nurture the tiny organisms, and in no time they’ll turn your water into something resembling pea soup.

Algaecides are an effective solution, but they’ll only work if water temperatures are above 60 degrees Fahrenheit. So what can you do if it’s still chilly?

    1. Lightly Rake the Algae: Raking live algae isn’t typically recommended as it may encourage algae growth if it’s not all removed. However, if you’re contending with an enthusiastic algae bloom that’s taking over your lake, pull out your Pond & Beach Rake and lightly rake out the overgrowth.
    2. Add EcoBoost™, Pond Dye: After you’ve raked the live algae, follow up by adding EcoBoost™ and Pond Dye, which have no temperature restrictions. The beneficial bacteria booster in EcoBoost will enhance the growth of muck-destroying natural bacteria, while binding phosphates and adding trace minerals for your fish. The pond dye will limit the amount of sunshine that’s reaching into the pond.
    3. Increase Circulation: If you’ve removed your aeration system for the winter, now’s the time to get it out of storage, give it a tune-up, put it back in your pond and start it up. Here’s a quick primer on how to do it.

When water temperatures top 60 degrees F, you can destroy the algae with an algaecide like Algae Defense®. The fast-acting liquid combats floating filamentous algae, bottom-growing chara and planktonic algae that turn water green. Once the algae turns brown and dies, rake out the debris, and then add some natural bacteria, EcoBoost™ and pond dye – all of which are found in our all-in-one ClearPAC® PLUS Pond Care Package. It’s an easy way to manage your growing spring problem!

Pond Talk: What improvements are you planning on doing to your pond or lake this year?

Keep Your Pond Clean & Clear - Pond Logic® ClearPAC® PLUS

Why does it seem harder to kill algae in the fall than in the spring? | Ponds & Lakes Q&A

Q: Why does it seem harder to kill algae in the fall than in the spring?

Q: Why does it seem harder to kill algae in the fall than in the spring?

Dwayne- Charlottesville, VA

A: Fall algae is tough stuff to control. Once the weather starts to change, it’s almost as if this green nuisance develops super powers and becomes resistant to every weapon in your algaecide arsenal. Why does this happen, and what can be done?

The Magic Number

Don’t worry: The algae in your pond is not morphing into a super villain. The problem lies with the effectiveness of your algaecides in cooler weather. When water temperatures start to fall below 60° Fahrenheit, all those chemicals in your arsenal actually become less able to do their job. It’s like asking Batman to fight crime without his utility belt – he can do it, but it’s not pretty.

Fighting Fall Algae

Though your tactics may be limited, the war against fall algae can be won with a three-pronged approach.

  1. Go Heavy If Necessary: First of all, if you have denser or more well-established algae blooms in one area of your pond or lake that have sprung up later in the season, you may need to use heavier doses of algaecide to combat them. Read the product’s label for safe usage guidelines.
  2. Be Ready for Resistance: Algaecides work well, but algae can become resistant to them if they’re applied throughout the season. Remember that as more algae grows and dies, more nutrients are added to the ecosystem – and those nutrients will fuel algae blooms, even in the fall. Control decomposing biomass with a pond skimmer or rake that will remove those fertilizing nutrients.
  3. Use the Right Product: Finally, make sure you’re using the right algaecide for the job. Cutrine®- PLUS Granular Algaecide is designed to control bottom-dwelling chara or algae blooms deeper than three feet from your pond’s or lake’s surface. Algae Defense® Algae Control – with a boost from some Treatment Booster™ PLUS surfactant – is best suited for algae that is three feet or less from the surface.

Algae can be a frustrating problem to deal with, especially in the cooler fall months, but it can be controlled with some patience and diligence. Good luck!

Pond Talk: Have you experienced fall algae blooms in your pond or lake this year? How have you controlled them?

Quickly Eliminate Pond Algae - Pond Logic(r) Algae Defense (r)

When treating weeds and algae, why do I have to treat in sections? | Ponds & Lakes Q&A

Q: When treating weeds and algae, why do I have to treat in sections?

Q: When treating weeds and algae, why do I have to treat in sections?

Zahn- Cedar Rapids, IA

A: It’s all about the fish. Though it’s an inconvenience to you, treating your lake or pond’s weeds and algae in sections is critical for the health of your underwater inhabitants. Those herbicides and algaecides deplete the oxygen in the pond, creating a stressful environment for the fish. Partitioning the treatments keeps oxygen levels safe while minimizing the stress.

When combating weeds and algae in the summertime, remember these three things:

  • Warm Weather = Less Oxygen: In the hot summer months, the water column will naturally hold less oxygen as it warms up.
  • Chemical Treatments = Less Oxygen: When you treat the weeds and algae with Shoreline Defense® or Algae Defense®, the oxygen levels will decline in your pond.
  • Decaying Matter = Less Oxygen:As the herbicide and algaecide start to work, the decaying matter will begin to be consumed by microorganisms, which use up the oxygen in the water.

All of these things create a stressful situation for your fish. When that happens, their immune systems could suffer, and they could develop and succumb to disease – which is something you don’t want to happen.

So while treating your pond or lake, break it into quarter sections. Then treat one section and wait 10 to 14 days to allow the water time to rebalance its oxygen level before treating the next section. Some other things you can do to improve the oxygen levels in your pond:

  • Add Aeration: Aeration, like the Pond Series™ Aeration Systems, adds oxygen to the water below the surface. The oxygen is utilized by the fish as well as the beneficial bacteria and microorganisms, which break down the muck and detritus that feed the algae and weeds.
  • Rake Away the Debris: As the herbicide and algaecide go to work killing the pond pests, take time to rake out the dead debris before it becomes algae- and weed-feeding pond muck. The Pond & Beach Rake makes the chore quick and easy.

Pond Talk: What kinds of spring and summer maintenance chores have you been doing so far this year?

Create the Perfect Pond - Airmax(r) Pond Series(t) Aeration Systems

My pond is full of floating algae. How do I get rid of it? | Ponds & Lakes Q&A

Q: My pond is full of floating algae. How do I get rid of it?

Q: My pond is full of floating algae. How do I get rid of it?

C.J.- Dumas, AR

A: With summer temperatures settling in, algae blooms are coming out swinging. Bright sunshine and warm temperatures trigger green growth, so it’s critical to keep floating and submerged algae in check before it grows out of control.

For the health of your pond and its inhabitants, keeping algae blooms to a minimum is necessary. Here’s an approach that works to eliminate the green stuff and prevent it from taking over:

Treat the Growth
First, use an algaecide to great rid of the algae bloom. You can treat floating algae with a fast-acting liquid spray like Algae Defense® Algaecide with Treatment Booster™ PLUS, which treats floating algae and chara that’s less than 3’ deep. 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. 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.

Remove the Dead Algae
Once the algae is dead, you should remove it. Why? By leaving the dead foliage in the lake, it will start to break down and become nutrients—or algae food—for new blooms. It’s a vicious cycle!

Use a pond skimmer, like the PondSkim™, or a rake, like the Pond & Beach Rake, to prevent that muck from accumulating.

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.

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

Pond Talk: How do you keep your algae blooms in check?

Fast Acting Liquid Formula, Eliminate Algae - Pond Logic(r) Algae Defense(r) Algaecide

The temperatures are rising, so when do I start using my ClearPAC PLUS?| Ponds & Lakes Q&A

Q: The temperatures are rising, so when do I start using my ClearPAC PLUS?

Q: The temperatures are rising, so when do I start using my ClearPAC PLUS?

Sharon – Waynesboro, GA

A: Inside your ClearPAC® PLUS box, you’ll find everything you need to keep your lake clean and clear this spring and summer. The five components, when used as directed, address the root of the most common pond problems by tackling excess nutrients and shielding the water from algae-feeding sunlight.
When should you start using ClearPAC® PLUS? It all depends on your water temperature. Let’s take a closer look at when and how to best use the products in your super-pack.

  • Pond Dye: As soon as the ice melts on your pond or lake, add your Nature’s Blue™ Pond Dye. The dye is not temperature-sensitive so it can be used even when water temps are too cold for beneficial bacteria products. Pond Dye does more than color your water and add to your landscape’s aesthetic; it also shades it from sunlight, which can kick-start algae blooms as the mercury rises.
  • PondClear™ and MuckAway™: When water temperatures rise to a consistent 50°F, you can start using the beneficial bacteria found in PondClear™ and MuckAway™ to break down nutrients suspended in your water column and muck on the bottom of your pond. These products can be used at the same time as your Pond Dye and EcoBoost™.
  • EcoBoost™: This bacteria booster that has no temperature restrictions, so it can be used year-round to bind phosphates that find their way into your pond or lake. You can use EcoBoost™ throughout the spring to give you a head start on pond season.
  • Algae Defense® : To be used only as needed, this algae-destroyer treats troublesome floating filamentous algae, bottom growing chara and the planktonic algae when it’s green and growing. Use Algae Defense® when the water temperature in your pond or lake is above 60°F. Don’t use Algae Defense® if you keep koi or trout in your lake.

After treating your pond with ClearPAC® PLUS, don’t forget to remove dead algae and debris with your Pond & Beach Rake. Doing so will remove the decaying vegetation and prevent them from feeding the algae—which will ultimately help your Pond Dye, PondClear™, MuckAway™, EcoBoost™ and Algae Defense® work even better!

Pond Talk: Has spring sprung in your area of the country?

Keep Your Pond Clean and Clear - Pond Logic(r) ClearPAC® PLUS

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