a cylindrical case of cardboard, metal, etc. containing the charge and primer, and usually the projectile, for a firearm. any of various small containers, holding a supply of material for a larger device into which it is inserted: an ink cartridge for a pen, a toner cartridge for a desktop printer. a protected roll of camera film.
Green Hair Algae is caused by excess Dissolved Organic Carbons or DOCâs in the water. The most common reasons for having too many DOCâs include overfeeding, lack of filtration and the use of tap or well water for water changes or freshwater top off.
Brown Algae Production & Swimming Pool Algae Control. Understand Types Of Algae In Water & Algae Facts . This is a very ugly kind of algae that will make your pool very uninviting, especially when you have a big party the next day. Killing it takes a little time, energy, and effort. Pool algae problems are normally a direct result of poor swimming pool water chemistry, pool water maintenance and/or bad filtration.