How much pool shock do I need for my pool?

The amount depends on your pool size, current chlorine level, and water conditions. Use the Pool Shock Calculator on Standard Chemicals to determine the exact dose based on your pool.

What is calcium hypochlorite pool shock?

Calcium hypochlorite (cal hypo) is a fast-acting, unstabilized chlorine used to quickly raise chlorine levels, kill algae, and restore water clarity without adding cyanuric acid (CYA).

Does calcium hypochlorite add cyanuric acid (CYA)?

No. Calcium hypochlorite does not add cyanuric acid, making it ideal for pools with high stabilizer levels where additional CYA would reduce chlorine effectiveness.

Why is my pool still green even when chlorine levels are high?

A pool can remain green due to algae growth, poor circulation, or high cyanuric acid levels reducing chlorine effectiveness. In these cases, a stronger shock treatment is typically required.

When should I use pool shock instead of chlorine tablets?

Pool shock is used for rapid chlorine increases to treat algae, cloudy water, and contamination, while chlorine tablets are used for slow, ongoing sanitation and maintenance.

Safety Data Sheets

Safety Data Sheets (SDS)

Safety Data Sheets provide important information regarding product composition, handling procedures, storage requirements, and emergency safety information.

You can download the official SDS documents for Standard Chemicals products below.

Product SDS Downloads

• Calcium Hypochlorite Pool Shock 68 SDS
• 3" Chlorine Tablets SDS
• Calcium Hypochlorite Pool Shock 56 + SDS

Spanish (Espanol) Product SDS Downloads

• Calcium Hypochlorite Pool Shock 68 SDS - Espanol
• 3" Chlorine Tablets SDS - Espanol
• Calcium Hypochlorite Pool Shock 56 + SDS - Espanol

(Additional SDS documents will be added as new products become available.)

If you require a Safety Data Sheet that is not listed, please contact us and we will be happy to provide it.