Overview
PROS
CONS
SPECS
pH impact
Ingredient
Treatment
Size/Pack
Timing
Our Top Choice
Clorox Pool&Spa Shock Plus
For years, Clorox Pool&Spa has been creating testing and treatment products for swimming pools you can spend more time safely enjoying them.
Easy to use. Clears cloudy water, creating a sparkling pool. Works fast and for salt water pools too. 1 pound bottle treats 10,000 gallons of water.
Does not work in all types of pools.
pH neutral
Sodium Di-Chlor.
Algae killing; improves filtration
6 or 12-pounds
15 minutes
Best Value
Aqua Chem Xtra Blue Shock
Aqua Chem is known for manufacturing and distributing superior performance and reliable swimming pool products.
Effective on all pool types. Will not bleach pool lines. Potent, and it improves filtration. 1 pound treats 12,000 gallons of water. 6-in-1 treatment. Keeps water pH neutral.
Quite pricey for the value you get in return.
pH neutral
Sodium Di-Chlor.
Kills bacteria and algae
5lbs; 1, 5, 10, 20, 30 or 36 pack
15 minutes
Doheny's Chlorine Free Oxidizing Shock
For 50 years, Doheny’s has been manufacturing innovative and efficient pool products and accessories for both household and commercial use.
Free of chlorine. Works great on all pool surfaces. Clears your pool in just 15 minutes. Makes pools sparkly and clean.
Needs more than the recommended dosage to be effective.
pH neutral
Potassium monopersulfate
Oxidation; reduces chlorine level
6, 12, 24, 25 or 50 pounds
15 minutes
DryTec Calcium Hypochlorite Shock
For years, DryTec has been manufacturing superior performance chemicals that are used to treat and maintain swimming pools.
Works fast. Made with potent ingredients. Cleans and clears your pool. Available in different pack sizes. Can be used for start-up or maintenance.
Requires too much work to store.
Increases pH
Calcium hypochlorite
Chlorine boost; start-up shock
1lb; 1, 12 or 24 pack
2 hours
HTH 6-in-1 Ultra Shock Treatment
HTH is a global manufacturer and supplier of chemicals for water treatment used in spas, swimming pools, and even drinking water.
Quick to dissolve which means fast action. Eliminates contaminants from your pool and restores clarity. Also works with salt water pools. 6-in-1 treatment.
Does not work with hot tubs.
pH neutral
Calcium hypochlorite
Water softening; scale protection
1 pound pouch
5 minutes