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I thought I did a successful chemical treatment, but why are the weeds coming back? | Ponds & Lakes Q&A

Q: I thought I did a successful chemical treatment, but why are the weeds coming back?

Q: I thought I did a successful chemical treatment, but why are the weeds coming back?

Barney – Andalusia, AL

A: Treating weeds is a tricky task. Despite dosing them with aquatic herbicides to clear your pond or lake of plant pests, they seem to grow back over and over again. It seems like a never-ending cycle! Why does this happen?

Well, chemical treatments have their benefits and drawbacks: On one hand, they work great as a quick fix to decimate actively growing weeds. But once those plants die, they become a food source for future weeds and algae, acting as a fertilizer for the very things you’re trying to get rid of. The herbicides do nothing to prevent future growth, and so you’re left with yet another growth spurt of pond weeds, which you’ll then treat with chemical herbicides – and around you’ll go again.

So how do you break the cycle? Here is a four-step approach that will help put an end to it.

  1. Remove the Dead Weeds: Once the weeds have browned, use a Pond & Beach Rake or PondSkim™ Debris Skimmer to remove as much dead material from the water as possible. This prevents dead plant material and muck from accumulating and fertilizing future weed growth.
  2. Be Proactive: Debris will still find its way into your pond, so add some beneficial bacteria to the water to manage the excess nutrients before they feed your weeds. The products found in the ClearPAC® PLUS Pond Care Packages – including PondClear™ and EcoBoost™ for suspended debris, and MuckAway™ for accumulated bottom-of-the-pond debris – naturally break down that organic material.
  3. Add Aeration: If you don’t have one already, install a Airmax® Aeration System that’s sized for your pond or lake. By circulating and adding oxygen to the water column, the beneficial bacteria will thrive. In turn, they’ll eat through even more debris and prevent weed and algae growth.
  4. Shade and Color:  Pond Dye is another offensive tactic in your battle against aquatic weeds. Pond dye shades the water, preventing ultraviolet light from reaching the plants.

Throughout the spring and summer, weeds will grow. But with some pond management practices, you can keep those pesky plants to a minimum.

Pond Talk: How often do you treat your pond or lake for weeds?

Skim Dead Algae & Vegetation - The Pond Guy(r) Pond & Beach Rake

 

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If I treat my pond for weeds and it rains, will the treatment still work? | Ponds & Lakes Q&A

Q: If I treat my pond for weeds and it rains, will the treatment still work?

Q: If I treat my pond for weeds and it rains, will the treatment still work?

Amy – Linn Grove, IN

A: That all depends! Because you’re applying chemicals to water, you’d think that rain would have no affect on the herbicide—but it actually might. How long it rains, how heavily it rains and how soon it rained after you applied the treatment could impact its quality and effectiveness.

If wet stuff from the sky is a threat and you’re thinking about spraying algaecides or herbicides to control nuisance plants in your pond or lake, here are four general guidelines to follow:

  1. Check the Weather: Is steady rain forecast for the day? If so, postpone any treatment of emergent weeds. Many treatments need to be absorbed by the plant’s leaves to be effective. A day-long stint of rain will rinse the chemical off the weed before it can be fully absorbed.
  2. Check the Weather, Part II: If you’re expecting heavy precipitation, definitely put off treatment to another day. The applied chemical could rinse off the plants and overflow from the pond before being taken up by the target weed.
  3. Reapply If Necessary: A light sprinkle will generally not affect the chemical’s potency in a pond that’s already been treated. If a downpour occurs within a few hours of application, however, plan to reapply the herbicide in a few days to fully control that target plant.
  4. Make Your Treatment Count: Use a pond sprayer to apply the chemical as close to target weeds as possible, and use a sticky surfactant to help the chemical absorb into the plant like Treatment Booster™ PLUS. Treatment Booster™ PLUS breaks down the surface of the weed or algae and allows the active ingredient to penetrate.

Even though you’re treating aquatic weeds, wet weather can still impact the chemical’s effectiveness. Check the short- and long-term forecast and plan accordingly – because you don’t want all that hard work (and costly treatments) to be for nothing!

Pond Talk: How has the weather affected your pond or lake so far this summer?

Kill Persistent Weeds & Grasses - Shoreline Defense® & Treatment Booster™ PLUS

We just bought a house with a pond. Do people actually swim in them? | Ponds & Lakes Q&A

Q: We just bought a house with a pond. Do people actually swim in them?

Q: We just bought a house with a pond. Do people actually swim in them?

Julie – Calcutta, OH

A: Yes, absolutely! Swimming ponds are all the rage—and for good reason. Compared to chemical-laden swimming pools cleaned with chlorine, swimming ponds use plants, natural bacteria and aeration to keep the water crystal clear. The Europeans have been creating these for years, and the trend has taken hold here.

Whether you want to dive into your new-to-you pond, however, really depends on how well it has been maintained. Here are some tips to prepare your pond for summertime fun!

  1. Reduce Muck
    There’s nothing like tiptoeing into a pond, only to sink 6 inches into the slippery, slimy muck. Ponds that haven’t been maintained often have a buildup of this sludge. One way to reduce it is to use natural bacteria like MuckAway™. The tiny microbes gobble through the decomposing debris, going through 2″ a month when used as directed.
  2. Add Aeration
    Did your pond come with an aeration system? If not, you need one. An aeration system will increase the productivity of those muck- and odor-eating natural bacteria by infusing the water with oxygen. An aerator will also improve water quality and churn the water column.
  3. Zap Algae
    Algae around your beach area is no fun—and it’s no good for your pond’s water quality, aesthetics and usability. Algae happens, particularly in ponds that have a lot of nutrients (muck and other decomposing debris) and sunshine, but you can battle it with some Algae Defense®. The algaecide goes after chara, filamentous and planktonic algae, the main cause of pea soup-colored water.
  4. An ‘Activity’ Pond
    Rather than refer to your pond as a “swimming pond,” think of the area as your summer activity zone. Who needs summer camp when you can do all these things around your pond:

    • Go fishing! Stock it with fish, grab your pole and tackle box, and catch and release some game fish.
    • Get some exercise! Run or walk laps around your pond, or drop in a paddle boat and do some laps—just 30 minutes can burn 100 calories.
    • Build sandcastles! Why go to a crowded beach when you could build sandcastles at home! Dump a truckload of sand pondside and enjoy your own dunes.
    • Try snorkeling or diving! It may not be the Great Barrier Reef, but you might make some interesting discoveries. Let us know if you find any sunken treasure.

Pond Talk: What favorite summertime activities do you do around your pond or lake?

Remove Up To 2

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 species of algae and where you are likely to find them 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 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

Should I treat my pond weeds now, or will they die on their own now that it’s getting colder? | Ponds & Lakes Q&A

Q: Should I treat my pond weeds now, or will they die on their own now that it’s getting colder?

Q: Should I treat my pond weeds now, or will they die on their own now that it’s getting colder?

Ed – Norton, OH

A: This time of year, many aquatic plants—including weeds—seem to be no longer actively growing. Triggered by dropping temperatures and fewer hours of sunlight, the cold-weather slowdown sends perennial plants into dormancy, and it can be hard to tell if they’re dead or just holing up for the winter.

Because you’ll see little or no greenery, treating those weeds can be a challenge. Plus, most chemical treatments, like herbicides and algaecides, don’t work well in colder temperatures. Algae Defense®, for example, stops working when the water is below 60°F, and the beneficial bacteria in PondClear™ almost slow down completely when temps fall below 50°F.

So what options do you have for treating weeds in the winter?

  1. Rake Out Dead Vegetation: First, pull on your muck boots and gloves, and manually pull weeds and dead foliage from the water with a weed rake or other weed removal tool. This will take out growing plants and cut down on decaying organics, which means fewer weeds and fertilizer for them next spring.
  2. Dose with Pond Dye: Next, add some Pond Dye to the water. Available in convenient liquid quarts, gallons and water-soluble packets, it will shade the water blue or black and reduce the amount of sunlight that reaches the bottom of your lake. Pond Dye can also be used regardless of the temperature or time of year.
  3. Aerate the Water: Unless you plan to use your lake for winter recreation, make sure your Airmax® Aeration System is up and running. It’ll keep your water circulated, which will reduce the muck buildup throughout the winter, and it’ll keep a hole open in the ice, which will allow for gas exchange. Your fish will thank you for it.

If you’re concerned about weeds as fall and winter approach, give these three tricks a try. By removing existing weeds and reducing the decaying buildup (i.e. weed fertilizer) now, you’ll have less work to do next spring—and won’t that be a treat!

Pond Talk: What kinds of aquatic weeds grow year-round in your area?

Protect Your Pond Year Round - Pond Logic® Pond Dye