What causes dark or slippery spots on the pool bottom or side walls
TOP 10 QUESTIONS ABOUT POOL WATER CARE FOR FIBERGLASS POOLS QUESTION 6 : WHAT CAUSES DARK OR SLIPPERY SPOTS ON THE POOL BOTTOM OR SIDE WALLS? Black algae: Can form in a pool that is crystal clear. Forms in corners and in clusters. Somewhat resistant to chlorine. Can be very harmful if swallowed. HOW DO […]
