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.

Refund policy

At Standard Chemicals Corporation, we pride ourselves on delivering high-quality pool and water-treatment products. Because many of the items we sell are regulated chemical goods, our refund and return policies must follow strict safety and compliance requirements.

1. Return Eligibility (All Sales Are Final)

All sales are final. Due to federal regulations (EPA/FIFRA) and hazardous material handling laws, we cannot accept returns on any chemical products.

This includes, but is not limited to:

Opened containers
Products that have been used, partially used, or altered
Chemicals that show signs of exposure to moisture, contamination, or improper storage
Hazardous materials shipped without prior authorization

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery so we can make it right.

2. Damaged or Incorrect Items (Only Exception)

If your order arrives damaged or incorrect, we will promptly resolve the issue.

To qualify for a replacement:

Email us at support@standardchemicals.com within 7 days
Include your order number
Attach clear photos of the product and packaging

Once validated, we will issue a replacement shipment at no cost to you.

3. Non-Returnable Items

Because chlorine products are regulated chemicals, customers must not ship items back under any circumstances. For safety and regulatory compliance, this includes the following:

Calcium hypochlorite (Cal Hypo)
Trichloroisocyanuric acid (TCCA)
Dichloroisocyanurate (Dichlor)
Sodium hypochlorite products
Any other hazardous or EPA-registered chemicals

4. Replacement Processing Time

Once a damaged or incorrect item claim is approved, your replacement will be processed within 3-4 business days.

5. Order Cancellations

Orders cannot be cancelled once they have entered the fulfillment process, as regulated chemical shipments cannot be intercepted or returned to our facility.

6. Questions

For help with damage claims or any other concerns, please contact: support@standardchemicals.com.