Q: I have stains on my liner. Help!
A: First, fill an old sock with sodium bisulfate (pH Minus). Tie it up and place it over the stained area. Wait 5-10 minutes. If there’s any improvement under the sock, you have a metal stain. If the test does nothing, it’s either algae or some form of bacteria. For metal stains, lower the chlorine level to zero. Lower the pH to 6.8-7.4. Use the Jack’s Magic Stain Identification Kit to determine which stain removal product will work best. For algae/bacteria stains, add 2 lbs of Yellow Out per 10,000 gallons and 4 lbs of chlorinated shock treatment directly over the infected area. Vacuum to waste.

Q: My water is cloudy. What should I do?
A: First, make sure that your pump and filter are working correctly. The return pressure should be clear and forceful. Incorrect water balance is usually the culprit. The alkalinity should be 80-120 ppm. If it’s low, add Alkalinity up. The pH should be 7.2-7.6. Use pH Plus/Minus as needed. The calcium hardness should be 200-400 ppm. Add Calcium Booster if needed. Test for free and total chlorine. If there’s a difference of 0.2ppm or greater between these levels, the pool should be shocked. After balancing the water, add 4 oz Super Clarifier per 10,000 gallons. This should coagulate any suspended particles. Run the filter for 48 hours. If water is still cloudy, as a last resort raise the pH to 8.0-8.4 range and apply 2 lbs of Flock (Aluminum Sulfate) per 10,000 gallons. Leave filter off for 24 hours to allow debris to settle. Vacuum slowly to waste.