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I think I have duckweed or watermeal. How do I know? And how do I treat it? | Ponds & Lakes Q&A

Q: I think I have duckweed or watermeal. How do I know? And how do I treat it?

Q: I think I have duckweed or watermeal. How do I know? And how do I treat it?

Richard – Fishers, IN

A: Duckweed and watermeal are both pond pests. Dense colonies of these prolific plants can completely cover the surface of a lake or fish pond, causing dissolved oxygen depletions and fish kills. These tiny invaders need to be managed before they take over.

But before you control them, you need to get to know them. Let’s meet these troublemakers.

Watermeal

The smallest seed-bearing plants in the world, watermeal is a very tiny (less than 1 millimeter) light green free-floating rootless plant that resembles green cornmeal. They prefer quiet water that’s undisturbed by waves, and they’re often associated with colonies of duckweed and mosquito fern (azzola). Unchecked, these plants can be aggressive invaders.

Duckweed

Duckweed is another very small light green free-floating plant, but unlike watermeal, duckweed has a single root and one to three leaves, or fronds, that measure 1/16- to 1/8-inch long. Like watermeal, duckweed tends to grow in dense colonies in quiet water that’s undisturbed by wave action. Duckweed colonies provide habitat for micro invertebrates, but if it completely covers the surface of a pond for an extended period, it will cause oxygen depletions. As its name implies, duckweed is often gobbled by ducks, which also transport it to other bodies of water but you cannot count them for keeping the weed in control.

Stop the Invasion!

To control these aquatic bad guys, you’ll need a herbicide. Clipper™ and Ultra PondWeed Defense® are both selective plant killers that will attack watermeal and duckweed. They’re a short-term solution for both—be sure to apply as directed.

For long-term control of duckweed, you’ll need something a bit stronger. We recommend Sonar™ A.S.. It’s formulated to control stubborn aquatic weeds all season long. Don’t forget to add pond dye, it protects the Sonar™ A.S. from being quickly degraded by the sun.

Pond Talk: Tell us about your experiences with duckweed and watermeal. Do you have any additional management tips to share?

Deliver Fast & Selective Control Of Weeds - Valent® Clipper™ Aquatic Herbicide

What Is A Winter Fish Kill & Why Do They Happen? | Ponds & Lakes Q&A

What Is A Winter Fish Kill & Why Do They Happen?I’ve heard the term “winter fish kill.” What is it and why does it happen?

Linda - Stockbridge, MI

A winter fish kill occurs when your pond or lake becomes uninhabitable for aquatic life and a large number of fish pass away. Winter is the most common time for a fish kill because the long, harsh conditions of the season deplete the oxygen content of the water.

Prolonged ice cover on your pond or lake seals off the water from the air and prevents oxygenation of the water. Ice and snow cover also prevent sunlight from reaching your pond plants. Pond plants normally produce extra oxygen for your pond via photosynthesis. Finally, decomposing organic matter in your pond releases toxic gases that can’t escape from under the ice.

Eventually the competition for the limited supply of oxygen in the pond becomes too great. The fish suffocate and a winter fish kill occurs.

The good news is that winter fish kills are preventable. There are many things you can do as a pond and lake owner to maintain proper oxygen levels in your pond. First and foremost, invest in a good Aeration System. Aeration is the process of circulating air through water and it’s critical for overall pond health.  A second option is to add beneficial bacteria products like MuckAway™ or PondClear™ to your pond or lake before the winter season. Beneficial bacteria digest accumulated decomposing organic matter in your pond and convert it to a harmless, odorless gas.

Pond Talk: What fish behavior may indicate low oxygen levels in your pond?

Airmax® Aeration Systems

My pond isn’t frozen yet, but I can’t see my fish. Are they okay? | Ponds & Lakes Q&A

My pond isn’t frozen yet, but I can’t see my fish. Are they okay?

My pond isn’t frozen yet, but I can’t see my fish. Are they okay?
Stephanie – Harpursville, NY

Fish are survivors. And when the water starts getting cold, they head for deeper waters, where the chilling effects of winter air are less pronounced. Provided there’s adequate aeration, your fish will likely linger at the bottom throughout the colder months. As a result, they’ll be much less visible – but the odds are extremely good they’re doing just fine.

In order to ensure there’s sufficient oxygen for the winter, some people opt to keep their aeration systems active all year ‘round. At the very least, though, it’s important to maintain a vent hole when – or if – your pond ices over. The vent hole allows harmful decomposition gases to escape, allowing fish to winter safely. And because their metabolism slows during the winter months, a properly vented pond will likely have sufficient oxygen to ensure the survival of your fish until springtime.

Fish, it turns out, are extremely resilient. After wintering in the lower reaches of your pond, your fish will gradually return to the upper levels once water temperatures start to rise. In general, it’s probably a good sign when fish become less visible. If they’re struggling, it’s far more likely you’d see them at the edges of your pond. So while you might miss them, your invisible fish are probably doing just fine.

Pond Talk: Have you noticed less fish movement in your pond recently?

Do herons fly south for the winter? | Ponds & Lakes Q&A

Do herons fly south for the winter?

Do herons fly south for the winter?
Bobby – Milwaukee, WI

Herons are migratory birds, and they have no appreciation for cold weather. So if you’re located in the cooler northern climes – particularly where ponds tend to freeze during the winter months – you’ll usually notice their absence when temperatures start to drop. Like many of us would like to do during winter, herons that choose to migrate will head for Central America and northern South America to warm up and fill up on fish. If you live in warmer portions of the United States, however, you may see herons all year ‘round, provided there’s enough open water and food to keep them happy.

While they’re beautiful to watch, herons are often unpopular with pond keepers – particularly those who have stocked their pond well. Herons consider fish as their favorite snack, and a single bird will happily devour every available fish, leaving the pond empty, and the pond’s owner grumpy. Herons aren’t picky eaters, though, and they’ll also snack on feeder fish, frogs, salamanders, lizards, snakes, grasshoppers and even dragonflies.

Fortunately, herons don’t hunt in flocks. When they spot a pond that’s already been claimed by another enterprising heron, they’ll typically fly elsewhere. That’s why we strongly recommend our Great Blue Heron Decoy as a simple way to discourage hungry herons from settling in for an uninvited visit.

Without preventative measures – like a well-placed and regularly relocated decoy – a heron will settle in as long as food is available. Otherwise, only cold temperatures, which send fish to the warmer water layers at the bottom of the pond and other food sources to their winter lairs, will encourage a heron to move on.

Pond Talk: Do herons continue to visit your pond throughout the fall and winter or more on?

Pond Logic® Blue Heron Decoy

My Fish Are Nibbling At My Toes When I Swim. Why Is This Happening And How Can I Stop It? | Ponds & Lakes Q&A

My Fish Are Nibbling At My Toes When I Swim. Why Is This Happening And How Can I Stop It?

My Fish Are Nibbling At My Toes When I Swim. Why Is This Happening And How Can I Stop It?

Holly – Wiggins, CO

While we love hand feeding our fish from time to time, nothing ruins your day faster than taking a dip in your cool refreshing pond water only to be reduced to an overgrown chew toy. No one wants to swim in a pond where they feel they may be next one the menu, so how do you stop your touchy feely finned friends from taste testing you and your friends?

It is common to have the smaller prey fish in your pond try to make a quick meal out of your fingers and toes than their larger predator counterparts. It is a sign that your pond may be imbalanced, creating a shortage of food for your smaller fish. They are simply trying to find a snack wherever possible and that includes your precious phalanges. Keep tabs on your fish population to make sure you have a balanced ratio of 3 prey fish to every predator.

If you have an abundance of smaller fish in the pond you may want to introduce some minnows into the water to give them a quick and easy meal that can be replenished over time. If your pond does have an unbalanced population, investigate why this may be. Make sure you have adequate habitat in the pond for your small fish to hide and mature and if you feel your fish are having trouble finding enough food consider manually feeding them using a quality fish food like Game Fish Grower Fish Food.

If you are not quite sure what or how to feed your fish read our Fish Food Blog. Also for some great tips on adding habitat to your pond click over to our Creating Habitat Blog.

Pond Talk: Do your fish nibble at you when you swim in your pond?

The Pond Guy® Game Fish Grower Fish Food

What is the difference between regular Bluegill and Hybrid Bluegill? | Ponds & Lakes Q&A

What is the difference between regular Bluegill and Hybrid Bluegill?

What is the difference between regular Bluegill and Hybrid Bluegill?

Dan – Toldeo, OH

Ask any thoroughbred Bluegill, and they’ll tell you there’s a huge difference. But the truth is, a Hybrid Bluegill is simply a cross between a Male Bluegill and a Female Sunfish. As it turns out, that combination produces a population that’s between 80% and 90% male.

There are effects of a predominantly male population. First – and most important – it slows down reproduction, which in turn prevents overpopulation. If left to their own devices, regular, non-hybrid Bluegills reproduce very quickly. Left unchecked, this means overcrowding – and all the negative ramifications that come with it. Also, with a predominantly male population, there’s also a natural tendency for fish not to ask directions. Fortunately, in a small, backyard pond, there’s really nowhere to get lost.

There are, however, some drawbacks to stocking your pond with hybrid Bluegills alone. Because reproduction is slower, natural cycles and predator fish may result in dwindling fish populations over time. In those situations, restocking with additional Bluegills and/or other feeder fish like minnows may be required every few years.

But for many ponds, hybrid Bluegills are an exceptional choice. Once they arrive, however, it’s important to make them feel welcome. We strongly recommend the use of Game Fish Food to satisfy hearty appetites. And for both predator protection and shade from the summer sun, our Fish Attractor Spheres are the perfect complement to your pond’s natural habitat.

Pond Talk: What type of bluegill do you stock in your pond?

Fish Attractor Spheres

We just purchased a house that had a pond, it hasn’t been taken care of, where do we start? | Pond & Lakes Q&A

We just purchased a house that had a pond, it hasn't been taken care of, where do we start?

We just purchased a house that had a pond, it hasn’t been taken care of, where do we start?
Tony – Romeo, MI

If you’ve ever adopted a stray pet, you already have a general sense of what it’s like to become the keeper of a long-neglected pond. Like the stray, the pond probably looks like it’s been reclaimed by nature: rough around the edges, none too attractive, and probably a bit more of a commitment than you’d ordinarily take on without a lot of advance planning.

But like a scrawny stray, a neglected pond is often a diamond in the rough – waiting for the loving attention of a caring keeper to really show its true colors. And with the right products from The Pond Guy®, the transformation from primeval bog to backyard showplace is much easier than you’ve imagined.

The first step in reclaiming your pond is to evaluate the status quo. With a quick inventory, you’ll determine if it’s full of weeds, if there’s any aeration, and if there are any fish who call it home.

For maximum initial impact, proper aeration is critical. If it’s missing, weeds thrive, algae blooms, and both fish and healthy plants struggle for survival. At The Pond Guy®, you’ll find exactly what your pond needs with one of our Airmax® Aeration Systems. Designed to suit the size and depth characteristics of your pond, the right system will begin the process of making your pond a safe, healthy habitat for the fish and plants that make ponds a pleasure.

Once the aeration is up and running, you’ll need to tackle the weeds and algae with our safe, powerful herbicides and algaecides. Our most powerful weapon in the fight to restore a pond’s health is our ClearPAC® and ClearPAC® PLUS products, which combine the benefits of beautiful, Nature’s Blue™ dye and Algae Defense® algaecide, the muck reducing power of our PondClear™ natural bacteria and our beneficial EcoBoost™ phosphate binder, which reduces phosphate levels to make water clear and healthy for fish, wildlife and anyone else wanting to use the pond.

ClearPAC® Plus also includes MuckAway™ to eliminate the muck that accumulates at the bottom after long periods without proper pond care. By following the simple steps included with ClearPAC®, you’ll see marked improvement in no time, with steady improvement over the course of several weeks of treatment.

For ponds that haven’t suffered long-term neglect, our Algae Defense® and Ultra PondWeed Defense® tackle specific problem areas quickly and effectively.

Pond Talk: Have you taken on the task of reviving an old pond?

Pond Logic® ClearPAC®

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