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.
Cause: Algaecides to control pool algae growth. Algae growth in a pool is inevitable. Warm, uncontaminated swimming pool water is a great place for algae to grow. Algaecides are the preferred method to effectively control algae growth, but some of the most effective ones are copper-based.