Algae are plants that belong to a pond and whose presence every pond owner has to get used to for better or worse. They are a basis of life for many small creatures in the pond, but if their infestation is too severe, algae control can be carried out using natural means.

A few algae in the garden pond are normal, but should not get out of hand

An overgrown garden pond is pretty much the worst nightmare scenario for most pond owners. Nevertheless, it must first be clear that algae by their very nature belong in an ornamental pond. It only depends on the amount, which reaches critical values at the latest when the goldfish are hardly recognizable. Completely free of algae however, there will never be a pond. In natural waters, crabs and a wide variety of single-celled creatures regulate the growth of algae in their own way, in artificial ponds these helpers are usually missing.

Remove thread and floating algae

The easiest way to remove these species, if recognized early, is to fish them out by hand. If the pond was built in a natural way and the water quality is right, large-scale algae control will not be necessary at all. As a preventative measure, certain plants can also help to absorb the missing oxygen from the air in order to discharge it into the water. The higher its saturation in the water, the lower the risk of algae in the garden pond. However, it also plays Water temperature at the oxygen concentration an essential role:

water temperature oxygen content per liter
5 degrees 12.9 mg
10 degrees 11.4 mg
15 degrees 10.6 mg
20 degrees 9.2 mg
25 degrees 8.3 mg
30 degrees 7.6 mg
35 degrees 6.8 mg

If the garden pond is to remain free of algae as much as possible, pumps can be used to help. However, it should be noted that it makes no sense if a submersible pump circulates large quantities of cold water to the pond surface. je cooler the water, the greater the oxygen content, which it can bind and from that it stays better on the bottom.

Algae-free with clear and healthy pond water

A water analysis, which you can carry out yourself with simple means, quickly and reliably provides clarity as to whether the water in the garden pond is partly to blame for the algae plague. Here is a brief overview of the most important laboratory values that your pond water should have:

  • Acidity: pH between 6.5 and 8.5;
  • Degree of hardness: between 10° and 15°;
  • Carbon hardness: minimum 6° and maximum 10°
  • Ammonia: ZERO! There is a need for action from 0.2 mg/l
  • Nitrite: ZERO! There is a need for action from 0.2 mg/l;
  • Nitrate: maximum 25 mg, from 50 mg/l also need for action;
  • Carbon dioxide: dissolved CO2 between 20 and 30 mg/l;
  • Oxygen content: 5 to 10 mg/l are optimal;
  • Water temperature: 16 to 26 °C (summer) and 4 to 14 °C (winter)

Algae control all natural

The best club against algae in the pond is not the chemical one, since hardly anyone would have the idea of enjoying their morning coffee with a dissolved Power-Tab water descaler. Your pond will be healthier and free of algae for longer if you use floating plants that like to reproduce Frog bite, crab claws or duckweed let it work for you. The more aquatic plants that adorn your pond, the fewer nutrients the algae have for their growth.

tips

In order to keep fish, the pond must be of an appropriate size so that the animals feel comfortable, but also the plants have an appropriate habitat. If you have fish, leftover fish food and the animal's droppings form an optimal basis for increased algae growth.

Category:

Garden design