Did you know that you can even increase the occurrence of annoying thread algae in the garden pond with chemical destroyers instead of reducing it? So save your money, because you can get the unpleasant green plague on the water under control with simple means.

Filamentous algae are the consequence of excess nutrients

They annoy garden pond owners, especially in summer temperatures, because when the water heats up a lot, the filamentous algae create a visible green carpet on the pond surface just a few days later. And it should be regular be fished out with a rake, otherwise too high a proportion of digested sludge will form on the pond floor. After drying, the algae can be used as mulch, which is placed around shrubs and trees, or you can dispose of the remains in your compost in a species-appropriate manner.

Do algaecides help the microcosm in the pond?

Algae remove important nutrients from the pond flora, above all the phosphates that are urgently needed by the higher aquatic plants. If you now use chemical algaecides, the algae will die off, but the excess dissolved phosphorus remains on the pond bottom, so that there is an oversupply that will soon ensure another algae bloom. In addition, the filamentous algae can adapt exceptionally well to their environment and from year to year more resistant to such agents will.

Consistent nutrient withdrawal helps against thread algae

It is therefore important to stop the nutrient cycle for the algae, for example by regularly cutting back your aquatic plants in the garden pond, if possible without residues of these cuttings remaining in the pond water. Also, the sludge is better removed from the pond at least once a year, which is quite easy, but with regard to the fish that may be present, can do with a mud vacuum.

How to prevent new thread algae in the garden pond

  • Above all, you should cut the fast-growing underwater plants regularly and also thin out the root system generously so that the biological balance is maintained.
  • Especially at midday, the majority of the water surface must be protected from excessive solar radiation. If not, see if the pond can be shaded additionally.
  • Protect your dough from leaf infestation as much as possible, especially towards the end of autumn. With the help of a bed net, the leaves can be easily caught and can no longer rot on the pond floor.

tips

To fill up your pond, instead of water from the tap (often containing phosphates to protect the water pipes!), use rainwater that is considerably less nutrient-rich.

Category:

Garden design