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Closing Comments


Each pond or lake is unique in appearance, chemistry, biology, and physical characteristics. Water chemistry and condition will vary between ponds as well as different areas of the same pond. Conditions like landscape debris, waterfowl density and runoff will affect the entire pond as well as create unique areas in the pond.

In writing this guide, we hope we have given you all the basic information you need to make informed decisions on how to address your pond maintenance needs. A good maintenance program and a properly maintained pond will require less effort than a neglected or sporadically maintained pond.

Your pond has a few basic needs for a healthy life. The most essential element in a healthy ecosystem is oxygen. Maintaining good oxygen levels and aerobic conditions throughout the pond does not need to be difficult. While you have several options, adding aeration is the easiest, most effective and most efficient. A basic aeration system is very easy to install and maintain, with an air compressor being the only working part. While the minute bubbles coming from an aeration line do not produce the most intense visual effect, a continually running aerator will provide circulation, water turn over and oxygen transfer.

Once you have the aeration system doing the primary job, you may want to add other circulation for additional water turn-over and visual appeal. There are a variety of options for water circulation including waterfalls, and fountains. Water movement is an important part of the look of your pond. Do you want an active pond that has large water displays? Do you like waterfalls and streams? Do you prefer a tranquil placid pond that just looks nice? What about the expense of installing, running and maintaining these systems? These are the questions you have to answer when you begin to assess your circulation needs.

It is important to remember that 'all water circulation is not the same' as far as benefit to you pond goes. Water will move in channels through the pond. This provides movement to some areas, leaving other areas without movement. Sediment deposits will be heaver in the dead areas. Water channels tend to remain near the surface, which will help keep the lake surface free of debris and scum. Heavy water movement can help prevent certain algae's from forming in the circulated areas. Debris tends to move toward the intake lines of you circulation system, so they should be located where debris can easily be removed. Skimmer baskets can be included to catch debris. This condensing of the surface debris, or collecting it in skimmers, can be a great time saver when you are skimming and cleaning the lake surface.

Pond maintenance is a dynamic undertaking with conditions that are constantly changing. The best management of a pond is to make adjustments to the ecosystem to keep an ecological balance. Clean and clear ponds can be a beautiful, aesthetic asset, as well as a necessary component for healthy turfgrass irrigation. Water features add a luster to the environment that can transform any landscape into an inviting oasis.

Too often, we see ponds or lakes that have become management nightmares, diminishing their aesthetic, as well as functional value. Many times, these problems could have been avoided. Knowledge of the dynamics that affect water quality make it possible for pond keepers to effect solutions which will make water features less problematic and easier to manage.

A thorough understanding of the factors which impact water quality will aid in the design and management of your ponds. Aquatic weeds, algae, sludge build-up, odors and poor clarity are the most common problems. Not surprisingly, these problems are often inter-related.

Nature has supplied us with an effective water clean-up tool, aerobic digestion. Aerobic bacteria will metabolize organic nutrients in the water, making them unavailable for vegetation. When a pond is in balance, there are sufficient levels of oxygen in the water to allow the bacteria to respire and digest these nutrients. When nutrient influx outstrips the bacteria's metabolic rate, the lake is thrown out of balance. The bacteria cannot keep pace with nutrient loading, and nutrient levels explode. We commonly see algae bloom as the result.

By taking a proactive approach to water quality management, you can help ensure that your ponds and lakes have cleaner waters and the aesthetic appeal you desire.

All water features have a life cycle; as they gradually fill in with sludge and nutrients and the aging process accelerates. By remembering the factors which impact water quality (nutrients, temperature, light, depth, and outside influences) you can make proper management decisions and chose tools to create lakes and ponds which are functional, beautiful and have a long life. Integrated lake management, or combining several practices, can help ensure your lakes never reach crisis levels.

The supplemental bacteria, used in conjunction with other lake treatment products, will give you the pristine healthy and balanced pond you want. Your treatment program does not need to be complicated to be effective. The more balanced your system is, the less work it will become. A well managed pond can be a pleasure to both the pond-keeper and those trying to enjoy the aquatic environment.

To begin a basic treatment program  you need to start with assessing your pond's current condition and address the existing problems one at a time. Do you have proper circulation and aeration? Are there outside nutrient sources that need to be addressed? Do you have current algae and weed problems? Is there heavy turbidity?

Once you have good water movement and the waterfowl and runoff issues are addressed, you should decide which chemicals are needed to most effectively address the existing problems. Generally, one of the basic copper algaecides, coupled with a contact herbicide if you have weeds, is a good way to begin.
You should always read the product labels carefully. These labels are the overriding “legal” document regarding the use of the product. If you follow the label, you will generally be in compliance with regulations, provided the product is legal for use in your state. Many states have their own restrictions on which chemicals they will allow and chemicals may be restricted for a variety of reasons. It is interesting to note that even with the overwhelming acceptance of copper based algaecides; some states have now banned their use because of their hazard to the environment. Other states are more concerned about the actual application of the products and the hazards to the applicator and public more than the environmental considerations.

We usually prefer to address weeds and algae on a spot treatment basis. Treatments can be made to one area of the lake at a time and the risk of oxygen depletion or serious problems with water chemistry can be minimized. Copper based algaecides and herbicides can be effective on both weeds and algae, especially in the early season. SePRO Corporation makes two copper formulations, K-Tea Algaecide and Komeen Herbicide that we have used with good success. Cutrine Granular Algaecide made by Applied Biochemists is very helpful with filamentous algae and Chara. REWARD, made by Syngenta Professional Products is both an algaecide and an herbicide and works very well as a general treatment to bring a lake into stable condition quickly. Results can be seen in as little as twenty-four hours and additional treatments can be made promptly if necessary. Reward does not work well in turbid water.

GreenClean Algaecides , manufactured by BioSafe Systems, is another helpful algaecide in some situations. It will oxidize algae on contact and leave a clean lake edge in its path; can also decreases turbidity by oxidizing particulate matter out of the water column. Unlike other oxidizers, green clean is safe for the aquatic environment, leaves no harmful byproducts and actually adds oxygen to the system. It should not harm microbial populations when used as directed. Read the product labels for spot treatment application rates and procedures.

Once you have made initial chemical treatments to address the established problems in the pond, you can begin treatments of the microbes. Wait one week after chemical treatments before the fist bacteria application. Generally, we like to make treatments to the ponds on a weekly cycle. Since every pond is different it isn't possible to write a precise treatment schedule, and the experience of the pond-keeper is an important factor on making these decisions, these guidelines that might be helpful.

 Bacteria can be applied successfully in water down to 50° F. Ponds are usually very nutrient-rich in the spring because there has been very little biological activity over the winter to use up these nutrients. When water temperatures reach the 60° F, weeds and algae will begin to come out of winter dormancy and begin to grow. You will want to apply algaecides or herbicides to begin to control the new growths before they advance very far. Once you have made initial chemical treatments, wait one week before making the next microbial treatment. These bacteria break down dead organic material so, it is important to let the chemical treatments do their work before making the follow-up microbial treatments. We recommend applying supplemental bacteria every two weeks throughout the growing season. Make any needed chemical treatments on the alternate weeks. This quickly becomes a standard treatment schedule. First make any spot treatments needed to control any current growths, follow this up one week later with microbes to breakdown the free organic nutrient and biomass, wait one week to decide if additional chemical treatments are needed. You should only use chemicals on actively growing aquatic plants and algae, dead algae will be consumed by the consistent bacteria treatments.

Remember, your goal is not the total removal of all vegetation from the pond, but to reach a stable equilibrium where the available nutrient is consumed by either the microbial population or the aquatic plants which produce oxygen and sustain the aerobic microbes. Your pond should have 15 to 20 percent coverage with light to moderately heavy aquatic plants. Moderate growths of filamentous algae or Chara can help keep the water clear while reducing planktonic algae, which is the least appealing variety of algae. This ecological balance is in constant flux; when you kill aquatic weeds, algae may grow, when you kill filamentous algae or Chara, planktonic algae may grow. When planktonic algae grow, it reduces sunlight for aquatic weeds, the weeds die, releasing heavy nutrient into the system. Without the weeds, oxygen can drop causing fish kills, and changes in the microbial population. Aeration and well timed chemical treatments can overcome these ecosystem crashes, giving the aerobic bacteria a chance to reduce nutrient levels and stabilize the ecosystem.

If the pond ecology is balanced, these changes and swings in the ecosystem are readily manageable. If you are aware of what organisms are currently developing in the system, you can be prepared with the appropriate treatment to bring the system back to equilibrium, rather than completely annihilating each specific organism. You should always familiarize yourself with the types of plants growing in your pond. Check the various herbicides to determine the proper control tool make spot treatments as a part of the biweekly treatment cycle and watch the results. If one species or section of the pond is getting out of control, you can make well timed, selective chemical treatments to address that specific problem without disrupting the ecosystem by “nuking it” with heavy additions of chemicals.

The basic treatment schedule is consistent and easy to work with … Make any needed chemical treatments … Wait one week for the chemicals to work, then apply the bacteria … Wait one week to apply additional chemicals … Wait one week to apply additional bacteria.

The bacteria will do much of the work for you. They will stabilize water chemistry, pH, alkalinity, oxygen levels and nutrient levels. The bacteria will also breakdown and remove bottom sediment maintaining a minimal benthic zone. All this is done with a simple application of Aqua Doc Microbial Treatment, every two weeks on a regular schedule, while water temperatures remain above 50° F.

Well-circulated ponds will have consistent water temperatures throughout the system. Monitoring these water temperatures can provide some predictable insight into the aquatic growths that will be developing.

At 50° F the system wakes up from winter dormancy; some signs on new growth develops. Odors may begin to be noticeable. You should begin microbial treatments. Consider adding lake dye if the water is currently clear. Circulation can run as little as 8 hours per day.

At about 60 ° F, aquatic plants and algae are ready to begin active growth. This is affected by nutrient levels, sunlight and weather conditions, turbidity, and level of dye in the lake. You may want to begin light spot treatments of chemicals to keep growths to a minimum, allowing bacteria populations to begin to dominate the system. Circulation should run at least 10 hours per day.

At 70 ° to 74° F, algae and aquatic weeds are actively growing. These growths are still dependant on sunlight and are affected by weather conditions and other factors. As the water temperatures rise, oxygen levels can be reduced, so circulation should be run 10 to 12 hours per day and the aeration system should be run four hours into the night to compensate for oxygen drops at night. Summer water temperatures can maintain a consistent 75° F in moderate climates to as high as 90° in some desert areas. Summer is when heavy growths of weeds or algae can develop and you want to make chemical treatments promptly if aquatic growths begin to develop rapidly. You can effectively treat these plants within the schedule laid out above, if you are ready with the correct treatment, on schedule, when and where it is needed.

Preparation and research are important during the summer, so you know where, when and how to apply chemicals to nudge the ecosystem the direction you want it to go. When daytime water temperatures are near 80° or above, your system is very vulnerable to oxygen-related problems. Your circulation should be running 12 to 14 hors per day with the aeration system running continuously. This will prevent a variety of adverse conditions from developing in the system and keep the aerobic bacteria, and thus the entire ecosystem, stable and happy.

We hope this paper has been helpful to you and we wish you great success in maintaining the pristine balanced ponds that we all desire.

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