Inches. -. A shoe size is a numerical indication of the fitting size of a shoe for a person. Several different shoe-size systems are still used today worldwide. In some regions, it is even customary to use different shoe-size systems for different types of shoes (e.g., men's, women's, children's, sport or safety shoes).
Types of Algae. Brown Algae (Diatoms)  This is the first type of algae that begins growing in a new aquarium. It usually grows on the gravel and glass. Unlike other types of algae, this type requires silicates in order to grow. By increasing light levels, this type of algae can be replaced by the more beneficial green algae. Brown algae can easily be scraped off the glass.
Algae are basically a primitive plant or photosynthetic organism that does not have a vascular system (complex structure). It is impossible to eliminate algae from entering the aquarium; it will arrive through tap water, from the air, from fish, and from plants.he best method to prevent and remove algae in the aquarium is to use some natural algae-eating fish and shrimps. For small aquariums and/or with small fish, Dwarf Plecs (Peckoltia sp.), Otocinclus Catfish, and Japonica/Algae Shrimps (Japonica sp.) are best.