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.
The viewing panel you can clean with a regular aquarium algae sponge. Donât use a sponge from your sink or from CVS or something, because a lot of them have anti-microbial agents, and thatâll harm your aquarium.ow to Clean Algae from a Fish Tank. Learn how to clean algae from a fish tank with the help of aquarium expert Joseph Caparatta in this Howcast video.