What does coastguard consider a pwc?

What do you do if your pool turned dark green and the pool place had you dump 3 gallons of baquacil shock and 1 quart of algacide in it but 3 days later and after lot of vaccuuming it did not clear? How do you get your green cloudy above ground pool water clear? What school does Melissa Wu attended? What shoe size is wade? What is equivalent to the length of 20 yards? Who dies in sea patrol at the end? What Is A Aquapak? Where on a swimming pool does it tell who made the pool? What type of batteries does the Spa Factory use? What type of water gun that hurts the most? How do you know if your cartridge filter is working good? What does green water signify? How long can a human tread water? Can you heat a pool after using copper algaecide? Can you put the new liner on top of the old one? Is it wrong to sleep in a bathtub? What tense is swum? How do people in Maine use hydroelectric power? How do you change sand in hayward S244T filter? New pool- filled with clear water looked great then shocked it and it turned green within 15 minutes-was filled and shocked on the same day?