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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

After getting out of my swimming pond, I had a leech on my leg! How do I remove leeches from my pond? | Ponds & Lakes Q&A

Q: After getting out of my swimming pond, I had a leech on my leg! How do I remove leeches from my pond?

Q: After getting out of my swimming pond, I had a leech on my leg! How do I remove leeches from my pond?

Dennis – Blythewood, SC

A: There’s nothing like climbing out of your pond and finding one (or more!) of these little blood suckers stuck to your leg. What are they, and how do you banish them from your pond?

Getting to Know Leeches

Leeches are 2-inch-long brownish-black segmented worms that are a distant cousin to the earthworm. They use their suction cup-like mouths and teeth to latch on to vertebrate and invertebrate animals, feeding on their blood. Of the 700 different leech species, the majority live in freshwater environments, like your swimming pond.

Leeches love to live in the debris at the bottom of your pond. In all that muck accumulation, they get comfortable, find food and hide from predators—also known as fish—swimming overhead.

Despite their bad reputation, leeches aren’t all bad. Up until the 18th and 19th centuries, these worms had been used medicinally on humans to improve and restore blood circulation. The practice waned for a time—likely a combination of the yuck factor and modern medicine—but it’s slowing coming back into favor.

Kicking Leeches to the Curb

Unless you practice leech therapy, you probably want to evict those invertebrates from your pond. The best way to do that is to remove their preferred habitat—all the muck and debris covering the bottom of your pond. How do you do that? Here’s a four-step approach:

  1. Pull Out the Debris: First, use a rake or cutter to remove weeds, accumulated debris, algae, decomposing plants and muck.
  2. Add Beneficial Bacteria: Next, add some beneficial bacteria, like those found in MuckAway™. The bacteria will head to the bottom of the pond and digest whatever muck remains. Remember that it will take some time to break down all that debris, so be patient.
  3. Let Your Fish Do the Work: With nowhere to hide, those leeches will become tasty meals for your fish. You may even consider adding some more leech-eating fish to your pond.
  4. Trap and Destroy: For those leeches that elude your finned friends, you can trap and remove them with a baited trap. Punch leech-size holes in a coffee or aluminum can, bait it with raw chicken or fish heads, and position it in a shallow area of your pond. When the worms go for the grub, they can get in but not out because the burrs from the hole punches will prevent them from escaping. Remove the can once it’s full and repeat until the leeches are gone.

If a leech latches onto you, don’t worry. In most cases, it won’t do any harm. In fact, you might not even feel it as the tiny critter injects the spot with anesthetic-anticoagulant combo while attaching itself with its suckers. You can remove a leech by breaking its suction seal with your fingernail or another blunt object, causing the worm to detach its jaws.

Pond Talk: Do you have any leech-removal tips to share?

Cut Through Tough Pond Weeds - The Pond Guy® 28 Inch Weed Cutter

Do I just throw MuckAway tablets into the pond from the shore? | Ponds & Lakes Q&A

Q: Do I just throw MuckAway tablets into the pond from the shore?

Q: Do I just throw MuckAway tablets into the pond from the shore?

Rich – Callahan, FL

A: MuckAway™ does a number on muck. The special blend of aerobic bacteria digests organic debris (a.k.a. muck), improves water clarity and eliminates noxious odors. The precision-release pellets are easy to use, and they’re perfect for battling built-up sludge anywhere in your pond.

But there is a way to best apply MuckAway™. Here’s what we recommend.

  • Disburse Evenly: Whether you’re using MuckAway™ near the shoreline or across your entire pond, the pellets will need to be spread evenly across the treatment area. Plan to use one scoop per 1,000 square feet.
  • Use a Boat: If you are treating the entire pond or lake, consider using a boat for uniform MuckAway™ dispersal. Individual tablets that are spread very far apart (tossed from the shore) will not have as dramatic an impact on muck as those that are densely and evenly distributed.
  • Consider MuckAway™ TL: A large pond or lake may need the super sludge-busting power of MuckAway™ TL Pond Muck Reducer. When used as directed, it will treat an entire surface acre and eliminate 1-2 inches of muck per month regardless of water depth!
  • Combine Forces: Many customers choose to use a one-two punch when contending with water clarity issues. They’ll use PondClear™ Beneficial Bacteria water soluble packets to clean and clear the water column, and MuckAway™ or MuckAway™ TL to break down the sunken muck around often-used areas, like the pond perimeter and beach areas.

You can increase the effectiveness of MuckAway™ and MuckAway™ TL by raking out any large, long-to-decompose debris from the pond before you begin treatments. This allows those aerobic beneficial bacteria to target the fine debris that’s difficult to remove.

Airmax® Aeration is also key to helping your bacteria be more effective at battling muck. The moving, aerated water provides both oxygen and circulation, which creates an ideal environment for MuckAway™ or MuckAway™ TL to flourish. Looking for proof? Check out our Fox Lake Field Study. It shows the results of what happens to muck when MuckAway™ TL and aeration are used together.

Pond Talk: How do you use MuckAway™ in your pond or lake?

Remove Up To 2 Inches of Muck Per Month - Pond Logic® MuckAway™

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®

Should I put catfish in my pond? | Ponds & Lakes Q&A

Q: Should I put catfish in my pond?

Q: Should I put catfish in my pond?

Francis – Avalon, WI

A: Of all the fish species you could stock in your pond, catfish is an excellent choice. These bottom dwellers live in inland or coastal water on every continent, except Antarctica, and include some of the most varied fish on the planet. Channel catfish, the most common type stocked for sport fishing, thrives in shallow waters like your pond or lake.

Feeding Behavior
Catfish are well known for being scavengers. They’ll eat just about anything they can find on the bottom of a pond. Their anatomy makes this task easy – they are negatively buoyant, which means that they generally sink rather than float thanks to a small gas bladder. Catfish also sport a flattened head that allows for easy digging through debris, a mouth that acts as a substrate suction and a body covered in taste buds.

To supplement the natural diet of the catfish in your pond, we recommend adding Pond Logic® EcoBoost™. It adds more than 80 trace minerals to the water, promoting the fishes’ health. We also suggest feeding Game Fish Grower Fish Food to ensure your catfish have enough food and to increase their overall size.

Ideal Environment
Channel catfish prefer warmer water (about 60° to 70°F) in areas with little or no currents. They thrive in small and large rivers, reservoirs, natural lakes and ponds. Channel cats are cavity nesters, meaning they lay their eggs in crevices, hollows or debris, to protect them from swift currents.

In your pond or lake, catfish won’t reproduce if they lack an adequate spawning structure. We suggest adding some fish habitat to help improve fishing conditions and provide an attractive habitat for catfish to spawn and grow.

Troubled Waters
Because these guys are bottom dwellers, they can stir up a lot of debris or clay. That will contribute to cloudy, murky water. Aeration can help. Airmax® Aeration Systems increase the oxygen in your pond, circulate the water, promote the colonization of beneficial aerobic bacteria and help maintain clear water.

Ultimately, your decision comes down to personal preference. Catfish are well suited for pond life. They have little effect on the predator-prey relationship in freshwater environments compared to predators like bass or prey like bluegills. Plus, they make for good fishing. What’s not to love about catfish!

Pond Talk: What are your top reasons for keeping catfish in your pond or lake?

Promotes Fish Health & Bacteria

We want to swim in our pond, but as soon as we step in, it is muck and smells. Help! | Ponds & Lakes Q&A

Q: We want to swim in our pond, but as soon as we step in, it is muck and smells. Help!

Q: We want to swim in our pond, but as soon as we step in, it is muck and smells. Help!

Steve – McDermott, OH

A: Yuck. In some luxe-minded circles, mud baths are all the rage – but muck baths aren’t, particularly when they’re paired with putrid, off-putting odors. What causes all that slimy, stinky stuff, and how can you get it under control before swimsuit season?

Making Muck

Muck, and its associated smell, is an all-natural byproduct of the breakdown of organic debris, like leaves, dead algae and disintegrating plants, in your pond. Chances are, your pond has been unused for a long period of time, or you get a lot of stuff floating or falling into your pond. All that material eventually builds up, breaks down and begins to decompose, forming muck and gases.

When you tiptoe into your pond and all that slimy muck squishes between your toes, you’re feeling the accumulation of this decaying material – and smelling the now-released stinky gases that were trapped in the debris. Not a fun experience.

Dealing with Detritus

Unless you want to launch your own luxury muck bath spa (it could be next big thing, after all!), you should definitely plan to get rid of all that detritus and its resulting odor. Here’s a three-step solution that can help:

  1. Add Natural Bacteria: If the water temperatures in your pond are above 50°F, add some Pond Logic® MuckAway™. The formula’s beneficial bacteria will help break down the decaying muck on the pond bottom. When used as directed, MuckAway™ can eat through 2 inches of muck per month!
  2. Add Aeration: When the weather allows, install an aeration system and crank it on. The Airmax® Aeration System product line includes aerators suited for any size pond – from shallow water bodies to ponds up to 6 acres. They each include diffusers, a compressor, cabinet, airline and free mapping service that takes the guesswork out of diffuser placement.
  3. Add Pond Maintenance: Don’t forget to add some pond maintenance chores to you to-do list. Regularly rake out dead and dying organic material. Keep plants trimmed and pond weeds managed. Do what you can to prevent leaves and debris from blowing into the water.

By using beneficial bacteria, adding aeration and preventing decomposing debris, you’ll be well on your way to a sludge-free pond that’s perfect for swimming and summer fun.

Pond Talk: Have you de-mucked your pond? Tell us your success stories!

Eliminate Noxious Pond Odors - Pond Logic® MuckAway™

How can I control the duckweed in my pond? | Ponds & Lakes Q&A

Q: How can I control the duckweed in my pond?

Q: How can I control the duckweed in my pond?

Kyle – Burke, KY

A: Duckweed is a tiny menace that definitely needs to be managed. Brought to your pond or lake by humans and their equipment or on the feet and feathers of visiting waterfowl, dense colonies of these plants can proliferate and eventually cover the water surface. It’s not something you want in growing your pond.

Duckweed or Watermeal?

Duckweed a very small, light green, free-floating plant with a single hair-like root and three 1/16- to 1/8-inch long leaves, or fronds. It tends to grow in dense colonies in quiet water that’s undisturbed by waves. You can fit six to eight of these plants of the tip of your finger.

Watermeal – another invasive plant that can be mistaken for duckweed – is also light green and free-floating, but it has no roots and is more of a grainy, seed-type plant. It’s also much smaller than duckweed; at less than 1 millimeter in size, you can fit 10 to 20 of them on the tip of your finger.

Duckweed and watermeal colonies can provide a habitat for microscopic critters and forage for hungry ducks, but the plants can reduce oxygen in the water if they grow to cover a lake’s or pond’s surface. That could compromise your fishes’ health and cut off sunlight to underwater plants.

Treat Effectively

To control duckweed, think short-term and long-term.

Short Term: Ultra PondWeed Defense® or Clipper™ used with Treatment Booster™ PLUS are your go-to herbicide products for short-term control of duckweed and other invasive aquatic weeds. They provide broad-spectrum pond weed control in slow-moving water and kill what’s actively growing in your pond. If duckweed hasn’t completely taken over your water surface, you may notice algae growth mixed in with the weeds – in which case you’ll need to treat the algae first. (Pro tip: Clipper™ will control both algae and duckweed.)

Long Term: For long-term control, you’ll need an herbicide like fluridone, which is found in Sonar™ A.S. When applied in early spring (or when you begin to notice weed growth), you’ll see the product controlling established plants in 30 to 60 days, and in 90 days, you’ll have full pond protection. Because exposure to sunlight can reduce Sonar’s effectiveness, use in combination with Pond Dye. If you use your pond water to irrigate, you will need to wait 30 days following treatment.

Improve Overall Pond Health

In addition to managing your menace with herbicides, you should also reduce muck and aerate the water to keep your overall pond healthy. The products in the ClearPAC® PLUS Pond Care Package – including PondClear™, MuckAway™ and EcoBoost™ – will help reduce the submerged and suspended organic debris. Combine that with some Airmax® Aeration, and your water will stay crystal clear all season long.

Pond Talk: What else do you do to control duckweed in your lake?

Treats Floating & Submerged Weeds - Valent® Clipper™ Aquatic Herbicide