Robelle pH Rise is used to correct pool water that is acidic, where pH levels measure below the ideal range of 7.2 to 7.8 ppm. To increase the pH level, add 1 lb. pH Rise per 10,000 gallons of pool water. This will help prevent equipment corrosion, plaster damage and eye/skin irritation associated with a low pH value.

Available in 5, 10, and 25 lbs.

Robelle pH Lower is used to correct pool water that is too basic or alkaline, where pH levels measure above the ideal range of 7.2 to 7.8 ppm. To decrease the pH level, add 1lb. pH Lower per 10,000 gallons of pool water. This will prevent scaling, calcium deposits, and cloudy water conditions.

Available in 6 and 20 lbs.

Robelle Total Alkalinity Control is used when pH levels fluctuate widely over a short period of time. To keep pH level stable and chlorine working effectively, total alkalinity readings should measure 100-120ppm. To increase the total alkalinity level by 8ppm, add 1 pound per 7500 gallons of pool water.

Available in 5, 10, and 25 lbs.

Robelle Calcium Plus is used to raise calcium hardness levels when measures drop below the recommended range of 200-400 ppm. If calcium hardness levels are too low the “soft water” will corrode pool equipment, etch pool plaster, and may cause metallic stains. To raise the hardness level by approximately 50ppm is necessary to add 6.25 lbs per 10,000 gallons of pool water.

Available 4, 10, and 25 lbs.

Robelle Stabilizer and Conditioner reduce chlorine loss from the sun’s ultraviolet rays. Stabilizer (cyanuric acid) forms a chemical bond with free chlorine helping to maintain continuous chlorine residual. Adding stabilizer to your pool water will greatly increase chlorine effectiveness and should measure between 30-50 ppm.

Available in 1.75, 4, 7 lbs.