Cloudy Pool Water Shock Calculator
Oxidize Suspended Organic Debris and Restore Water Sparkle
Cloudy pool water is often caused by dead bacteria, swimmer waste, or early-stage algae. Dosing shock to 15 PPM oxidizes these microscopic particles so your filter can remove them and restore clarity.
Customize Your Pool Parameters
Adjust pool volume or shock severity to re-calculate instantly.
Granular shock. Fast-dissolving, adds zero CYA stabilizer.
Leaves zero residue, zero calcium, and zero CYA. 100% dissolved instantly.
Includes UV stabilizer. Ideal if your pool has low CYA (<30 ppm).
Avoid cheap big-box shock with low available chlorine (40–50%). Use 68–73% commercial Calcium Hypochlorite or 12.5% Sodium Hypochlorite for maximum algae kill rate.
Cloudy Water Troubleshooting Protocol
• Shock to 15 PPM at dusk using Calcium Hypochlorite or Liquid Chlorine.
• Run pump continuously for 24 hours to maximize water turnover.
• Add 4 oz of polymer pool clarifier to bind microscopic suspended haze into filter-trappable clumps.
Distinguishing Calcium Cloudiness vs Organic Cloudiness
If your pH is above 7.8 and Calcium Hardness exceeds 400 ppm, shock may cause temporary calcium carbonate clouding. Lower pH to 7.4 with acid; if water clears, the cloudiness was mineral precipitation, not bacteria.