+ Read the sticky.

+ If water temps are 75 or below, AND you have eliminated all algae, AND you have a solar opaque cover, THEN you don't need algaecide. Of course, if you those things aren't true, algaecide won't save you.

+ Did you know that ALL the high level competition diving boards used in the world are made in Sparks? The company began after WWII, using aluminum fighter wing construction.