Combat floating algae in the pond and remove

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Combat floating algae in the pond and remove: pond

While blue or green algae do not need to worry garden owners a lot, thread algae are a big problem for the water. However, there are several measures to reduce algae growth or prevent it from forming.

Different suspended algae in a pond plant

Greenish shimmer in the pond is usually harmless. These are blue or green and blue-green algae, which are microscopically small and do not disturb the overall appearance of a pond. Despite this algae, the water of the pond remains clear. To fight these algae, you can use water fleas as a helper. They feed on this type of algae and cause in this way that after a while a biological equilibrium in the pond adjusts. In contrast to the rather harmless blue and green algae thread algae can cloud the water. These algae multiply very quickly and often cause the oxygen concentration in the pond water to drop extremely. As a result, fish in the pond can suffocate and the water tilts.

Main reason for algae development

An increased phosphate content in a pond improves the living conditions of algae and promotes their rapid growth. If, at the same time, the water temperature rises and there is enough sunlight, there is a rapid increase of algae. Nutrients like phosphate can get into a pond system in different ways. Often, excess fish food and fish droppings, which are one of the most common sources of phosphate, sink to the bottom. If it rains particularly hard, there is also the possibility that nutrient-rich soil is flushed into the pond. This unwanted nutrient supply promotes algae growth.

Reduce nutrients with other aquatic plants

  • By regularly fishing algae, you can reduce the nutrient content in a pond.
  • In addition, there should be enough other aquatic plants in a pond that also need different nutrients such as phosphate and nitrate.
  • The more plants are in a pond, the faster it is possible to bind nutrients through plant growth.
  • In order to remove them from the nutrient cycle, it is necessary to cut back the plants regularly.

Mineral binders and renovation

Using mineral binders (phosphate binders) it is possible to lower the phosphate content of a pond system. Chemical processes bind the nutrients. They can not be taken by algae or other plants. In addition, it makes sense to carry out a renovation in order to extract nutrients from the water. For this purpose, the Mulmschicht is removed from decayed plants and fish droppings. The old Teicherde should be removed by a nutrient-poor, new substrate. In addition, one cuts back all plants vigorously, divides them and then places them in the nutrient-poor Teicherde.

Select plant of the pond

The shape of a pond system plays an essential role in preventing phosphate sources. Although a pond is the most natural in a sink, there is a risk that mineral fertilizer and garden soil will be washed into the pond. Therefore, it is recommended to choose a place with a slight hill. There is also the option to surround the pond with a 60 cm deep drainage ditch. This trench is filled with coarse grained sand.

Pay attention to light conditions and water depth

Too much sunlight promotes the growth of algae. Therefore, it is important that the pond is at least a third in the shade. In addition, the depth of the water and the amount of water are decisive factors. Small and shallow pond systems are more likely to have algae problems.

Teicherde and pond water

For the Teicherde one should use only little nutrient-poor sand. As a pond water is only tested tap water. Often the water is enriched by water suppliers with up to 5 milligrams of phosphate per liter, in order to achieve a reduction of the corrosion in the lines. If the tap water contains too much phosphate, it can be treated with phosphate binder. Since groundwater is normally low in phosphate, it should be preferred for the pond.

Fish in the pond and phosphate pollution

Water lilies Nymphaea

Excretions from different fish and other aquatic animals naturally also contain phosphate. The effects on the nutrient content of the pond are limited, as long as the animals feed only on food sources in the pond. If you feed the pond inhabitants regularly with fish food, the nutrient content in the pond increases. To prevent the tipping over of a fish pond, there are two options. Only a few fish are used so that additional feeding is not necessary. It is also possible to install a high-quality filter system. This removes excess nutrients and algae from the pond.Especially with large fish, additional technology is necessary.

Pond sludge sucker and skimmer for the care of the pond system

Nutrient-rich deposits in garden ponds can be removed with a pond sludge sucker. It is best to cover a smaller pond in the fall with a net. So no leaves can fall into the water. Using skimmers, you can remove floating debris such as pollen from the surface of the pond. These devices suck the water off the surface and channel it into a filter system. The following measures can reduce algae growth:
  • To fish algae
  • against blue and green algae settle water fleas
  • Reduce nutrient content with phosphate binder
  • Bind nutrient content with other aquatic plants
  • Replace pond soil with nutrient-poor sand
  • Design a pond system on a hill
  • Select shade position for pond
  • refrain from fish food
  • select only a small number of aquatic animals
  • For larger fish in the pond, install filter system
  • to care for the pond regularly use pond sludge sucker and skimmer

Worth knowing about floating algae shortly

Floating algae can be recognized by a green color of the water. This can be so extreme that you can only see something up to 2 cm away from the water surface or disc.
  • The first aid is the complete cleaning of the pond, as far as possible.
  • It is not enough just to replace the water, a thorough cleaning of all utensils in the water must be done.
  • To prevent the darkening of the pond helps with a suitable foil or other suitable materials.
  • It is necessary to aerate the pond during the covering phase with a pump, so that it does not come to the lack of oxygen.
Many pond owners are particularly interested in floating algae to chemical agents. Especially popular are flocculants, which provide very clear again for clear water. However, they are not without side effects! Their effect is that the flocculant combine with the algae and other substances and then settle at the bottom of the pond or aquarium. There, however, they must be removed very quickly, otherwise they release nutrients such as nitrate and phosphate during decomposition and, in turn, form nutrients for algae.
Finally, a hint for all: Who does not want to take action against the floating algae, takes only two to three weeks patience. Then the multiplication cycle is interrupted by the algae themselves.

Video Board: how to get rid of pond algae - How to remove algae from pond without harming fish.

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