sera guide - Splendid plants in your aquarium

21 Algae, except for the so-called blue-green algae, are also plants, although they are less popular in well-kept aquariums. However, algae are a natural part of any water body, as long as they do not take over. Algae and plants have similar, requirements considering their nutrient supply. This also means they are direct competitors for minerals and trace elements. You can give the higher plants an advantage over algae in fighting for nutrients by supporting healthy plant growth. Algae use their chance and multiply rapidly only when plants are weakened. The result: The aquatic plants are further affected, be it by lacking nutrients or by dense algae growth. Since algae and aquatic plants are similar it is accordingly difficult to combat algae in a directed way. There is an important differ- ence that sera uses for algae prevention. Algae require a slightly varied light spectrum for photo synthesis than higher plants. Algae will receive insufficient light by directed ad- dition of light filtering substances, as they are included in sera blackwater aquatan. The light, however, is still sufficient for aquatic plants. The algae growth is thus considerably inhibited. Using UV-C systems as in the sera fil bioactive external filter + UV or the sera UV-C System 5 W has proven well, in par- ticular against floating algae. Aquatic plants and algae