![]() In the freshwater aquarium, the variety of Red Algae widely known as Black beard algae (or black brush algae) ( Audouinella sp., Rhodochorton sp.) is the most common. Black Beard Algae on an Anubias plant leaf Most red algae are also multicellular and reproduce sexually. … Some rhodophytes have very little phycoerythrin, and may appear green or bluish from the chlorophyll and other pigments present in them. Their red colour comes from the presence of the pigment phycoerythrin this pigment reflects red light and absorbs blue light. Red Algae are rare in freshwater aquariums. And they are generally easily removed off glass, plants or ornaments with an algae remover pad and gravel vacuum. ![]() They are keenly eaten up by algae eating fish or shrimp. I find this algae one of the easiest to remove. ![]() They form a brown slime on the gravel, rocks and tank glass, and can even discolour the water in heavy infestations. Diatoms (Brown algae)ĭiatoms appear in freshwater aquariums when phosphates and nitrates levels are high. They may occur as a tangled mass as in Spirogyra, or as green strands attached to rocks and plants, as in Oedogonium and Vaucheria. The filamentous green algae, in which the individual cells are arranged and form long chains, cause frequent problems in aquariums. Typical examples are Chlamydomonas and Chlorella, which forms a green film on the aquarium glass. In large numbers they will appear as a green cloudiness in the water. The unicellular green algae are not visible individually to the naked eye. In these algae the green pigment chlorophyll is not masked by the other pigments, as it is in other groups. This class contains a large proportion of the types encountered in freshwater aquariums. Diatoms (Brown Algae) (Bacillarophyeae).The algae most likely to trouble freshwater aquarists are the following groups: In the aquarium they may be found floating on the surface, suspended in water, or growing in a tangled mass on rocks, plants, gravel or other tank equipment. Algae spores can be carried on air currents through the atmosphere and may germinate successfully on their return to a favourable environment after a period of several years !! Types of algaeĪlgae have adapted to grow in all types of water flowing or stagnant salt and fresh warm and cold clean and badly polluted. ![]() Many species of algae can exist in a seemingly poor state for many years. Important factors contributing to the tenacity and widespread distribution of algae is their incredible reproductive capacity and their ability to survive in a viable state in difficult environments and over long periods of time. Algae are simple plants that range in form from microscopic unicellular types to gigantic seaweeds that may reach and length of 70 metres (230 feet.) We will concentrate on the smaller end of this size range. What are Algae?īotanically, algae belong to the division of plant kingdom known as Thallophyta, which they share with fungi. Where did the algae come from? What type of algae do I have? Why is my algae out of control? How do I get rid of the algae? Lets answer some of these questions. Every freshwater aquarium will be troubled by an infestation of algae at some stage.
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