30,000 Gallon Pool Shock Calculator
Commercial and Large Residential 30,000 Gallon Pool Dosing
A large 30,000-gallon pool requires 3.0 lbs of Cal-Hypo (3 bags) or 2.4 gallons of 12.5% liquid chlorine for routine sanitation. Severe algae requires 9 lbs (9 bags) to achieve complete breakpoint oxidation.
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.
30,000 Gallon Dosage Guidelines
• Routine Dosing (10 ppm): 3 lbs Cal-Hypo (3 bags) OR 2.4 gal Liquid Chlorine.
• High Swimmer / Post-Party: 4.5 lbs Cal-Hypo OR 3.6 gal Liquid Chlorine.
• Algae Outbreak (30 ppm): 9 lbs Cal-Hypo (9 bags) OR 7.2 gal Liquid Chlorine.
Large Pool Safety & Distribution Strategy
In a 30,000-gallon pool, walk the entire deep end and mid-pool perimeter when broadcasting shock. Ensure return jets are aimed slightly upward to facilitate surface gas exchange as combined chloramines evaporate.