Algae in the swimming pond signal very impressively with the green cloudiness of the water that something is wrong with the biological balance in the natural pool. Nevertheless, the annoying floating and thread algae are no cause for concern, as their growth can be restricted with simple means.

If the water is dark green, algae have spread

After just a few weeks, many natural pool owners are annoyed about algae in the swimming pond. Apart from the fact that it is practically impossible to completely eliminate this green plague, the algae load can be greatly reduced, but this requires a little patience. You can even fight floating and thread algae completely without chemicals and in a completely natural way.

First: more shade for the pond

Algae form particularly strongly when there is an excess of heat and light on the pond surface on hot summer days. Natural shading with the help of planting with reeds helps here. Planting trees would not be recommended, as falling leaves produce additional nutrients that promote algae growth. If necessary, shade sails can also be used to protect the swimming pond locally.

Second: crevices and cracks in the swimming pond

In the small cracks within the pool wall set with stones and bricks, young algae are particularly lively. It is therefore better to avoid unevenness within the pool walls when constructing the swimming pond or to clean the corresponding areas more often later on.

Third: Consistent removal of nutrients from the pond water

The division of the pool into a regeneration and a bathing area, which are separated by a gravel filter, has proven its worth. With the help of this biological filter system, suspended particles are bound and the nutrients required for growth are removed from the algae.

Fourth: Optimal planting of the pond zones

Plants with a very high need for nutrients, which deprive the algae of their habitat, are particularly suitable for this. Sweet flag, bulrush and pike weed are particularly suitable and can be combined with additional floating plants.

Fifth: Regular cleaning of the natural pool

Algae in the swimming pond will spread less in a sludge-free pool than in a rotten one. We recommend continuous cleaning of the pond floor and the bank areas, for which powerful sponge vacuum cleaners have proven to be helpful. Depending on the size and location of the swimming pond, the entire pool should be thoroughly cleaned at least three to four times a year.

tips

It is not uncommon for the pool water to be responsible for an increased formation of thread algae in the swimming pond. In such cases, a laboratory test helps, which provides precise information about the actual content of phosphates and nitrates in the pond water.

Category:

Garden design