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Build #135
Work-mode tools: whether today is a pour day, how much concrete the footings need, and what the pool water is doing.
Pour conditions
Reading conditions…Concrete Yardage
Enter length and width to calculate.
Formula: (L × W × D-inches) / 12 / 27 = cubic yards. Bag counts are approximations.
Pool Volume
Enter dimensions to calculate.
Rect: L × W × D × 7.48. Circle: π × r² × D × 7.48.
Pool Chemistry Quick Reference
| Level | Ideal | If Low | If High |
|---|---|---|---|
| pH | 7.4 – 7.6 | Add soda ash (sodium carbonate) | Add muriatic acid or sodium bisulfate |
| Free Chlorine (ppm) | 2.0 – 4.0 | Add chlorine (liquid, tablets, or shock) | Wait / dilute / partial drain |
| Total Alkalinity (ppm) | 80 – 120 | Add baking soda (sodium bicarbonate) | Add muriatic acid (slowly) |
| Cyanuric Acid / Stabilizer (ppm) | 30 – 50 | Add cyanuric acid conditioner | Partial drain and refill |
| Calcium Hardness (ppm) | 200 – 400 | Add calcium chloride | Partial drain and refill |
Always follow manufacturer dosing instructions. Test water before and after adjustments.