In fishing ponds and lakes, irrigation reservoirs, and stock tanks, pond scum algae can be a serious problem. It can cause water intakes to fail, cause mosquito problems, and cause fishing to be a swampy, messy, less than fun experience. So, how do you get rid of it.

Pond scum can be removed manualy by skimming it from the top, but scum skimming is not much fun, and can be quite time consuming.

There are a lot of products on the market for getting rid of pond scum algae. Copper products, both granular, and liquid can be spread or sprayed across the top of the algae, causing it to die and sink. Diquat also works well. Whichever product you choose, follow the label directions to a “T”. To do otherwise is a violation of federal law, and can do severe damage to your pond or lake.

If the body of water is completely covered, do not treat more than from one quarter, to one third of it at a time. Dying vegetation uses up dissolved oxygen, and if too much is depleted, it can kill your fish. Proper chemicals, properly applied, will not usually kill fish, but dying vegetation will.

Pond scum, it goes by a lot of different names, but most of the time, it is really a type of algae known as filamentous algae.

Algae, are very primitive plants, there are several types, including the planktonic algae that is often suspended in the water profile of a pond or lake, and gives it that green tint that we are all familiar with. It is a single cell, that feeds aquatic invertebrates, which, in turn, feed larger creatures and so on up the food chain.

There are more advanced forms of algae as well, such as “Nittela”, and “Chara”, which resemble vascular rooted plants.

Filamentous algae, or pond scum starts growing at the bottom of a body of water, and gradually moves to the top by virtue of the buoyancy it provides through the creation of oxygen by the process of photosynthesis.

Pond scum, algae

Classifying aquatic vegetation can be a little difficult, but we will try to understand it from a practical, treatment based perspective. Some of these definitions will be a little different from the textbooks, but they are practical for treatment.

Lake and pond vegetation can be classified by type of root system:

• Rooted Plants. Plants with roots extending into the soil.
  

• Floating Plants. Plants which float on the surface of the water without a direct connection to the soil.
  

Anomalies.

Not all types and species fall neatly into one or the other of these categories. Even the floating plants usually have something resembling a root system, and which functions in much the same manner as a root system of a plant which is rooted in the ground, by drawing nutrients from the water rather than the soil. Often, rooted plants can be dislodged, and survive for long periods by floating in nutrient rich waters.

Algae, of the filamentous type, seems rooted, in the most rudimentary way when it begins it’s life at the bottom of the lake or pond, and only rises to the top via the air it produces. Some algae, the planktonic single cells, that are suspended in the water seems to be true floating plant, while such algae types as nitella, and muskgrass ar normally rooted and resemble true complex vascular rooted plants. Obviously , there is nothing written in stone.

Next: Submersed, Emergent, and Floating Plants

• It is ugly, smelly, and encourages the wrong kind of insect life.

• Mosquitoes use it for cover, and fish can’t get to them to eat them as a result.

What is it?

Filamentous algae, commonly called pond scum. In our area, it is about the most common form of algae problem, and when coupled with other weeds such as “Coontail”, it can become a real problem. There are other types of algae, such as “Muskgrass”, or “Skunkweed” as it is sometimes called, and “Nitella”, sometimes called “Stonewort”, which resemble true plants. Whatever type of algae problem you have, we offer a treatment for it.

For more pond scum information:

• Getting Rid Of Pond Scum
• Pond Scum Information
• Pond Scum Biofuel?