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Algae in the pond: prevention and how to get rid of them

Good day, dear colleagues. In today’s article I would like to touch upon the topic of beautification not of an aquarium, but of a home pond under the open sky. We all know that green water is evidence that algae colonies have appeared in the pond.

In this article we will consider the main reasons why they appeared and you will learn how to get rid of algae and mud in the pond.

Immediately I would like to note the complexity of the fight against algae in small ponds that quickly heat up in the summer in the sun. Such conditions are favorable for the development of protozoan colonies. In larger bodies of water, where abundant growth of underwater vegetation is observed, there are usually no such problems, or they are minor.

The water in the home pond can turn green as soon as you start it, but the algae can also disappear in a couple of weeks, when biological balance is established in the pond.

Preventive measures to avoid algal outbreaks in the lake or pond:

  • The depth of the reservoir should not be less than half a meter (if there is only vegetation), and not less than one meter, if, in addition to vegetation, fish also live in a pond;
  • In the presence of fish, do not overfeed them. The optimal amount of food that should be given to their pets should be such that the fish eat it in five minutes. If the feed is much larger, its residues will sink to the bottom and will decompose, which will cause a sharp increase in the concentration of organic compounds necessary for the active growth of algae;
  • It is highly undesirable to enter into the pond of various fertilizers that are used for terrestrial vegetation, as they are an excellent feeding for the active growth of protozoa;
  • Limit the flow of light to the reservoir, because on a hot summer day under the scorching sun the green algae will actively multiply;
  • To keep the protozoa on food starvation, land various aquatic plants on the bottom of the pond (water lilies are the best option), since they will produce oxygen that will purify the water;
  • Put on the bottom of the reservoir a couple of bags of peat, which will strangle protozoa for some time.

However, there are cases when, when performing all the above activities, the water still remains green What to do in this case? There are three simple ways:

  1. Manual. Take a long stick and start winding long threads of algae on it. If you have a film on the bottom, be extremely careful not to pierce it, otherwise the water will all go to the ground;
  2. Chemical – various specialized shops can offer you a wide range of products that can successfully fight with algae in the pond, for example Trigger 3, Alg>

Some other professionals recommend using such a well-known fish, such as grass carp or tolstolob. With small dimensions of the reservoir, you will need a dozen fish that will destroy all unwanted vegetation.

When you increase the size of the pond, you also have to increase the number of running fish.

How to get rid of green filamentous algae?

  • Make in the pond sheer walls with a depth of 50 centimeters;
  • Cover the border of the pond with facing stone so that it extends beyond its inner boundary by 20 centimeters and raise it above the water level by 10 centimeters;
  • Populate a large amount of floating grass in a pond, for example: pista, large-leaved duck, eyhorniya, azolla. This grass will quickly grow on the surface and tightly cover the shallow water zone from the scorching sun;
  • Populate the pond fish nurses, such as gray comets, carp and white cupids;
  • Use special preparations to combat algae.

Any artificial reservoir of small size is a small world in which the well-being of the inhabitants and plants depends on a huge number of external factors. And home pond is no exception.

In order to keep the pond clean and tidy, some preventive measures are sometimes not enough, you need to seek help from pond techniques, such as pond filters and aerators.

The fact is that at night the algae consume a huge amount of oxygen dissolved in water, respectively, if there are fish in the pond or plants are planted, they may simply not be left with oxygen. To maintain a constant level of oxygen in the pond, it is necessary to install a compressor that will not allow the reservoir to “suffocate”.

If necessary, to quickly raise the level of oxygen in the pond, you can use the above-mentioned Algoks.

Air compressors are installed onshore, and they are easy to maintain and install. A hose leaves the outlet, at the end of which a sprayer is installed that breaks the flow of air into a huge number of small bubbles, thus providing a better water saturation with oxygen.

In addition, the compressor carries out “airing” of water in the pond and it does not stagnate, as it is mixing.

Remember, natural ponds are much less likely to suffer from “green water”, unlike artificial ones. The reasons for this can be many: a small amount of aquatic vegetation, a lot of fish, the wrong equipment of the pond, etc.

But aeration alone is not enough, the water must also be filtered. By water filtration we should understand both biological and mechanical cleaning.

In the same way as in aquarium conditions. Cleaning in pond filters is carried out in three stages.

Coarse dirt and other mechanical suspension detain sponges, which can then be removed, rinsed and placed back into the filter. After a tank with a porous material, water enters the compartment with a bio-filler (zeolite, ceramic rings or porous plastic), which is colonized by colonies of beneficial bacteria responsible for biological treatment. Unlike sponges, fillers can not be washed frequently, since you will wash off all the bacteria, and it will take time for them to settle again.

Sometimes activated carbon is added to this filter compartment, which removes harmful impurities from the water.

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