Many types of deposits and stains can form on stones. It's not always algae. Sometimes there is talk of black algae. What exactly are they and how can they be removed? You can read all about it in this article.
How can I remove black algae from stones?
Black deposits on stones are often red algae that have changed color. Like other types of algae, moss or lichen, they can be removed mechanically or using environmentally friendly methods. You should avoid cleaning products or use them sparingly.
What exactly is black algae?
The so-called black algae is not a separate type of algae, but usually ared algaethat just looks black. These algae are quite common in aquariums, but can also form on stones or in the pool. If the aquarium is affected, it is usually beard algae or brush algae. You should remove the algae immediately to prevent it from spreading further. If the infestation is small, manual removal (collection) may be sufficient; if the infestation is severe, thorough cleaning is required.
Does black algae need special treatment?
No, you can remove black algae from stones just like other algae. Mechanical removal, such as brushing or scrubbing, is particularly recommended. You can also scrape off thicker deposits. If you're afraid of strenuous physical work, a high-pressure cleaner can help remove moss and algae. However, this causes the stones to be attacked. The surface roughens up and thus offers unwanted deposits a better surface to attack.
Which home remedies can I use against algae?
Soda,Soda,Vinegar EssenceorHousehold Vinegarare quite common home remedies for removing algae or moss from stones, but they are therefore only recommended to a limited extent. Make sure that residues do not reach the groundwater. Neither plants nor animals should come into contact with it when you let the products work or rinse them off.
Tip
Not always algae
Not all dark deposits that form on garden paths, concrete blocks or terraces are algae. Before you remove the deposits, you should first make sure what type of stain it is. Sometimes it's just harmless dirt that can be easily washed off and doesn't require any special cleaning products.
