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Pool chemistry graph for your swimming pool
This document provides guidelines for ideal, acceptable, and problematic ranges for various water chemistry parameters for swimming pool maintenance. It lists the parameters to test, such as pH, chlorine levels, total alkalinity, calcium hardness, cyanuric acid, metals, nitrates, phosphates, and salt or biguanide levels. For each parameter, it gives the ideal range, acceptable range, potential problems if outside the ranges, and corrective actions to take. The goal is to keep all water chemistry parameters within the ideal or acceptable ranges for safe and clear swimming pool water.
Pool chemistry graph for your swimming pool
- 1. http://www.dolphinindustriesnj.com/pools/ Pool Maintenance /WaterChemistry Test Ideal Range Acceptable Range Problem Range Corrective Action pH (Chlorine) 7.2 - 7.6 7.2 - 7.6 too high or too low Add acid or sodium bisulfate to lower. Add soda ash to raise. pH (Bromine) 7.2 - 7.8 7.2 - 7.8 too high or too low Add acid or sodium bisulfate to lower. Add soda ash to raise. Free Chlorine, PPM (Active Germicidal Form) 1 - 3 PPM 1 - 3 PPM over 5.0 PPM Too low add chlorine. Too high cut back on chlorine additions. Combined Chlorine, PPM (Total minus Free Chlorine) 0 - 0.3 PPM 0 - 1.0 PPM over 1.0 PPM Too high superchlorinate. Total Chlorine, PPM (Free plus Combined Chlorine) 1 - 3 PPM 1 - 3 PPM over 3.0 PPM Too high cut back on chlorine additions. Superchlorination 10 PPM 10 PPM n/a How much will be required depends on product used and pool condition. Bromine, PPM 3 - 5 PPM 3 - 5 PPM over 10 PPM Too low add bromine or shock Too high cut back on bromine additions.
- 2. Total Alkalinity, PPM80 - 120 PPM 80 - 180 PPM over 180 PPM Too low add sodium bicarbonate. Too high consider adding acid. Calcium Hardness, PPM, (Vinyl) 80 - 120 PPM 80 - 400 PPM over 400 PPM Too low add Calcium chloride. Too high add sequestering agent. Calcium Hardness, PPM, (Gunite) 150-200 PPM 150-400 PPM over 400 PPM Too low add Calcium chloride. Too high add sequestering agent. Cyanuric Acid, PPM, (Frost belt) 20 - 40 PPM 20 - 150 PPM over 150 PPM Too low add Cyanuric Acid. Too high replace some water. Cyanuric Acid, PPM, (Sun belt) 40 - 60 PPM * 40 - 150 PPM** over 150 PPM Too low add Cyanuric Acid. Too high replace some water. Iron, PPM 0.0 PPM 0.0 PPM any measurable amount Add metal treatment. At least one dose per 0.5 PPM. Copper, PPM (Mineral Sanitizer or Ionizer) 0.1 - 0.3 PPM 0.1 - 0.3 PPM (with pH favoring 7.2) over 0.3 PPM Follow man. instructions Copper, (unplanned additions, natural sources or corrosion) 0.0 PPM 0.1 - 0.3 PPM (with pH favoring 7.2) over 0.3 PPM Add metal treatment. At least one dose per 0.5 PPM. Manganese, PPM 0.0 PPM 0.0 PPM any measurable amount Add metal treatment. At least one dose per 0.5 PPM Nitrates, PPM 0 - 10.0 PPM 0 - 40 PPM over 40 PPM No practical solution. Removing phosphates mitigates their presence.
- 3. Phosphates, PPB 0- 100 PPB 0 - 250 PPB over 250 PPB Phosphate removers are available. If untreated, higher chlorine usage results. Total Dissolved Solids, PPM no salt chlorine gen 300 - 2000 PPM 300 - 3000 PPM over 3000 PPM Replace some of the water. Total Dissolve Solids, PPM w/salt chlorine gen 3000-4000 PPM 3000-5000 PPM over 5000 PPM Test salt level and consider replacing some water Salt, PPM with salt chlorine generator Manufacturer's Recommendation Manufacturer's Recommendation Too high or too low. Add salt, if too low. Replace some water, if too high. Biguanide, PPM 30 - 50 PPM 30 - 50 PPM Too high or too low. Add Biguanide, if too low. Too high, reduce additions. Biguanide Shock, PPM Suggested application is 1-quart per 7500 gallons. Enough has to be added to register a 5-10 PPM level and produce clear water. Varies with spa use. Too high or too low. Add Biguanide Shock, if too low. Too high, reduce additions.