It's a list of all the people and things I hate so much I want to hit them in the face with a shovel.. Concept coming from the Marian Keyes novel, The Mystery of Mercy Close (2012).
Use chlorine as your go-to algae killer. When your pool water is green or contains visible algae clumps, your pool does not have enough chlorine. Shocking the pool with a large dose of chlorine is the most effective way to kill the existing algae and bring your pool back to sanitary conditions.
Mustard Algae. Mustard algae is a chlorine-resistant form of green algae (yellow-green to brown in color). It often resembles dirt or sand on the bottom or sides of a pool. Treatment: Same as black algae. In certain cases, when a pool is full of algae, the algae must be vacuumed directly out of the pool.