When pools demand consistent, high-output sanitation, small shock bags simply aren’t enough. The Pro Series Cal Hypo Pool Shock 25LB – Natural Chemistry is a professional-grade calcium hypochlorite shock designed for pool owners, service companies, and facilities that need reliable chlorine performance at scale.

Formulated with 65% available calcium hypochlorite, this bulk shock treatment delivers strong oxidation, effective algae control, and dependable sanitation without adding stabilizer to the water. It’s a trusted choice for maintaining clean, clear pool water in high-use environments where chemistry must stay predictable and efficient.

Professional-Grade Calcium Hypochlorite for Serious Pools

This Pro Series cal hypo shock is built for pools that experience heavy bather loads, warm temperatures, or frequent organic contamination. The high chlorine output aggressively oxidizes contaminants that consume free chlorine and lead to cloudy water or algae growth.

Used regularly, it helps:

• Maintain proper sanitizer levels

• Control algae before it becomes visible

• Break down oils, sweat, sunscreen, and debris

• Support consistent water clarity

It’s an essential product for keeping demanding pools under control.

No Stabilizer — Prevents Long-Term Chemistry Problems

Unlike stabilized chlorine products, Natural Chemistry Pro Series Cal Hypo Shock contains no cyanuric acid (CYA). This is critical for long-term water balance, especially in pools already using stabilized tablets or granular chlorine.

By avoiding CYA buildup, this shock helps:

• Preserve chlorine effectiveness

• Prevent “chlorine lock”

• Reduce the need for draining and refilling

• Keep water chemistry manageable over time

It’s an ideal solution for pools where water replacement is costly or impractical.

Bulk 25LB Size for Efficiency and Cost Control

The 25-pound container is designed for efficiency. Instead of constantly restocking small bags, this bulk format reduces downtime, lowers per-treatment cost, and simplifies chemical storage for ongoing maintenance.

This size is well suited for:

• Pool service professionals

• HOAs and community pools

• Apartment complexes

• Hotels and hospitality pools

• Large residential pools

For anyone managing more than a single backyard pool, bulk shock just makes sense.

Fast-Dissolving Granules for Effective Treatment

The fast-dissolving granular formula allows chlorine to disperse quickly when applied correctly, delivering rapid oxidation without prolonged cloudiness. When used according to label directions, it provides strong performance with predictable results.

This makes it effective for:

• Routine shocking

• Algae prevention programs

• Recovery after heavy pool use

• Post-storm or contamination treatment

Product Specifications

Why Pool Professionals Choose Pro Series Cal Hypo

• Bulk 25LB size for high-demand pools

• 65% available chlorine for reliable oxidation

• No stabilizer to prevent CYA buildup

• Effective algae and bacteria control

• Trusted Natural Chemistry formulation

• Cost-efficient solution for ongoing maintenance

For pools that require consistent performance without chemistry headaches, this pro-grade shock delivers dependable results.

Buy with Confidence from Benchmark Pool Supply

When you purchase Pro Series Cal Hypo Pool Shock – Natural Chemistry from Benchmark Pool Supply, you’re buying from pool professionals who understand large-scale water care and real-world pool conditions.

We stock trusted commercial-grade chemicals and support our customers with knowledgeable guidance to help keep pools clean, clear, and balanced.