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Algae in the pond not only look unattractive, they can also harm other pond inhabitants. Read here what needs to be done and what really helps.
A private pond is the highlight for many garden owners, but such a pond also needs to be maintained accordingly. Algae in the pond not only make the water unclean, it also looks neglected and can even harm other pond inhabitants.
Why do algae develop?
Among other things, algae always arise when the garden pond is standing in the sun. Therefore, you should look for a place when the gate pond is not in the blazing sun. However, this is not the only factor that promotes the formation of algae in the pond.
In addition to the ideal location, i.e. partially shaded, the size of the pond is also decisive. The smaller the pond, the faster the water can warm up, providing an ideal nutrient for algae. So it is always important to maintain the biological balance. Algae are always at risk if the phosphate content rises to over 0.035 milligrams per liter. This is favored by fish droppings, fish feed remains, but also rain and leaves.
Fight algae with natural means
The best remedy for algae is not to let them develop in the first place. This statement is only half true, because algae are not necessarily a burden on the pond, but rather a sign of the good biological quality of the garden pond. They only become a problem when they are taken over by hand, recognizable by the green color of the water. In most cases, thread algae trigger the clouding of the water.
Underwater plants against algae in the pond
As already mentioned above, a sunny location is an ideal breeding ground for algae. Since it is difficult to implement an existing pond, invest a few euros in aquatic plants that are ideal as shade providers:
- Water Lilies
- floating heart
- marsh screw
Another tip: pond division into zones
In addition to the pond size, it is also important to have the correct planting, i.e. where and how the pond plants are used. In order to prevent algae infestation, the garden pond should be laid out in different stages.
"bank zone" swamp zone "shallow water zone" deep zone (middle of pond)
Extra tip: Clean the pond regularly with a net. If this does not remove the algae, use a thick stick. Thread algae in particular are somewhat "stubborn" and are easier to remove (turn the stick around the algae and pull it out).
Snails against algae
Snails are also very good for tackling the algae problem in a natural way. It is important that you use the right snails, otherwise only your aquatic plants and not the algae will be eaten. Tower lid screws or sump lid screws are very suitable, for example.
What to do if natural remedies no longer help
With the right location, optimal planting and zoning, you are laying the foundation for the fact that algae do not even form. But sometimes that's not enough, the pond tips over. Against this there are remedies that you should try step by step.
Filters against algae in the pond
I don't want to spoil your good mood, but once a pond is completely full of algae, even the best filter won't help. However, there are special filter systems that do a good job in the event of a small infestation. The filter holds the algae in a sponge, the clear water is returned to the pond by a pump.
There are biodegradable algae killers on the market. When using it, you should definitely follow the manufacturer's instructions so that the natural balance of the garden pond is not disturbed.