Pool Chemical Calculator
Calculate your pool's gallon capacity and get exact chemical dosage recommendations based on your latest water test. Bring your results to our Alpharetta store for free computerized water testing to confirm.
Step 1 — Pool Volume
Select your pool shape and enter dimensions.
Step 2 — Water Test Results
Enter your current readings (leave blank if unknown).
Target: 1–3 ppm
Target: 1–3 ppm
Target: 7.2–7.8
Target: 80–120 ppm
Target: 200–400 ppm
Target: 30–50 ppm
Recommended Doses
Based on 18,563 gal pool volume.
3 lb of soda ash (sodium carbonate)
pH 7 is acidic. Add soda ash to reach ~7.4.
10.5 lb of baking soda (sodium bicarbonate)
TA 60 ppm is low. Low alkalinity causes pH bounce. Add baking soda to reach ~100 ppm.
35 lb of calcium chloride
CH 150 ppm is low (especially important for plaster pools). Add calcium chloride to reach ~300 ppm.
3.5 lb of cyanuric acid conditioner
CYA 20 ppm is low. Without stabilizer, sunlight burns off chlorine fast. Add conditioner to reach ~40 ppm.
Disclaimer: These are approximate dosages based on industry averages. Always add chemicals with the pump running, never mix chemicals directly, and retest after 30–60 minutes. For a precise reading, bring a water sample to our store for free computerized water testing.
Ideal Chemical Range Reference
Free Chlorine
1–3
ppm
Ideal: 2.5
Ph
7.2–7.8
pH scale
Ideal: 7.4
Total Alkalinity
80–120
ppm
Ideal: 100
Calcium Hardness
200–400
ppm
Ideal: 300
Cyanuric Acid
30–50
ppm
Ideal: 40