Serving commercial aquatic facilities across New York State.

Talk With Angelo

E-Z Clor · Specialty Chemicals and Site Disinfection · Shock and oxidizers

E-Z Clor Oxidizers (Shock)

E-Z Clor shock: 68% and 73% calcium hypochlorite granules plus O2 non-chlorine oxidizer

Request a Facility AssessmentTalk to a Water-Quality Specialist
← Back to all productsAvailable through FreyTechFacts verified against manufacturer literature 2026-09-26.

Overview

E-Z Clor positions weekly shock oxidizing as the step that "eliminates organic materials introduced by bathers and the environment," restoring clarity and reducing sanitizer demand. The line is unstabilized: none of the oxidizers is a cyanurate product.

Re-Fresh and Shockwave are 68% calcium hypochlorite (65% available chlorine) granules. Re-Fresh+, Super Shockwave, and Super Shock-It 73 are 73% calcium hypochlorite (70% available chlorine), described as fast-dissolving with no need to predissolve. The manufacturer's descriptions for Re-Fresh/Shockwave and for Re-Fresh+/Super Shockwave/Super Shock-It 73 are essentially identical, which suggests the paired products are the same formulation under different labels; the site does not state this explicitly.

O2 Shock is 42.8% potassium peroxymonosulfate (4.5% active oxygen), an oxygen-based non-chlorine shock; the manufacturer states swimmers may re-enter 15 minutes after treatment.

Is this a fit for your facility?

Usually a fit when

  • Weekly oxidation of bather waste and organics without adding cyanuric acid
  • Cal hypo superchlorination that also raises calcium hardness contribution rather than stabilizer
  • Non-chlorine oxidation where a short return-to-swim interval is wanted (O2 Shock)

Ideal facilities and conditions: Weekly or as-needed shock treatment; Superchlorination after heavy bather load or algae events; Non-chlorine oxidation between chlorine shocks.

Problems it addresses

Key capabilities and benefits

Capabilities

  • Re-Fresh and Shockwave: 68% calcium hypochlorite, 65% available chlorine
  • Re-Fresh+, Super Shockwave, Super Shock-It 73: 73% calcium hypochlorite, 70% available chlorine, no predissolving needed
  • O2 Shock: 42.8% potassium peroxymonosulfate, 4.5% active oxygen, swim 15 minutes after treatment
  • Cal hypo products stated to kill bacteria, control algae, and destroy organic contaminants
  • Available in 1 lb pouches and 25 lb sizes (O2 Shock: 1 lb and 25 lb; Super Shock-It 73: 1 lb pouch)

Operational and buyer benefits

  • Manufacturer states oxidizing "restores water clarity and reduces the demand on the sanitizer"

Available models and configurations

O2 ShockNon-chlorine, oxygen-based shock. Manufacturer says it removes contaminants (swimmers' waste) and restores sparkle; swim within 15 minutes after treatment; for all pool surfaces.
Re-FreshFast-acting granular calcium hypochlorite (68%, 65% available chlorine). Unstabilized chlorinating granules; manufacturer says it kills bacteria, controls algae, and destroys organic contaminants.
Re-Fresh+Fast-acting, fast-dissolving 73% calcium hypochlorite granules (70% available chlorine). Shock treatment and super chlorinator; no need to predissolve; for all pool surfaces.
ShockwaveFast-acting granular calcium hypochlorite (68%, 65% available chlorine). Manufacturer description matches Re-Fresh: kills bacteria, controls algae, destroys organic contaminants.
Super ShockwaveFast-acting, fast-dissolving 73% calcium hypochlorite granules (70% available chlorine). Shock treatment and super chlorinator; no need to predissolve; for all pool surfaces.
Super Shock-It 73Fast-acting, fast-dissolving 73% calcium hypochlorite granules (70% available chlorine). Shock treatment and super chlorinator; no need to predissolve; manufacturer says it restores sparkle and clarity.

Technical specifications

Chlorine shock chemistryCalcium hypochlorite, 68% (65% avail. Cl) or 73% (70% avail. Cl)Source: https://www.ezclorchemicals.com/products/oxidizers
Non-chlorine shock chemistry42.8% potassium peroxymonosulfate, 4.5% active oxygenSource: https://www.ezclorchemicals.com/products/oxidizers
Package sizes1 lb pouch and 25 lb (all except Super Shock-It 73, which lists 1 lb pouch only)Source: https://www.ezclorchemicals.com/products/oxidizers

Specifications are summarized from manufacturer literature and depend on configuration. Confirm current values with FreyTech before design.

Installation requirements and retrofit considerations

Prerequisites

  • Follow label directions; cal hypo is an unstabilized chlorine and does not add cyanuric acid

Integration with other equipment

No equipment integrations are documented for this product. Coordination happens through the design team.

FreyTech's role: design, installation, commissioning, training, support

Project services

  • Evaluation of fit for your facility
  • Supply, lead time and pricing confirmed on request
  • Installation and support coordination where the product calls for it

Ongoing service and support

  • Parts, consumables and warranty coordination through FreyTech

Brochures, manuals, warranties and specifications

All resources for E-Z Clor Oxidizers (Shock) · Request documents

E-Z Clor Oxidizers (Shock): frequently asked questions

Does E-Z Clor shock add cyanuric acid?

No. The oxidizer line is calcium hypochlorite (68% or 73%) or potassium peroxymonosulfate (O2 Shock); none is a stabilized cyanurate product, per the manufacturer's stated ingredients.

Related products

See the Specialty Chemicals and Site Disinfection category.

Related solutions: Stabilize water chemistry · Improve filtration and water clarity

Next step

Is E-Z Clor Oxidizers (Shock) right for your facility?

Send us your pool volumes, current equipment, and what is not working. A specialist will review fit honestly and recommend next steps.

Serving commercial aquatic facilities across New York State.

Request a Facility AssessmentTalk to a Water-Quality Specialist

Prefer to talk? 1-800-724-2770