What is a hydrofiols?

Why do pools turn yellow after it rains? Is it cheaper to build a pool in the fall or winter vs the summer? Does a YZ 80 have a water pump? What type of solar cover reel do you recommend for a 15x30 above ground pool if there is no room at either end of the pool because it is fenced? I need a hayward h1001d pool heater service manual? Did Lewis and clark find a complete water route to the pacific? What is the tag-line of ponds? What happens at the YMCA if your in the pool and it rains? Is the Old Town Loon 138 Kayak still in production? How many gallons of water in a round 18' x 52'' above ground pool? How deep can a scuba diver go on compressed air? What does a jet ski look like? Cause a speedo to jump around? What is causing the one-year-old sand base under your above ground pool liner to start having craters? What is the analogy for wet? How many laps in a 25 meter pool equals 1600 yards? You used 32 ounces of clarifier to your 30 round above ground pool for cloudiness The pool still looks cloudy what do you do? What body of water surrounds Grenada? Different kinds of oceans in the Philippines? How has bluewater helped the area?