Refresh+ 25 lbs 73% Calcium Hypochlorite Pool Shock
Product Overview
At 73% available chlorine, RE-FRESH+ is what pool techs reach for when they need a high-potency, unstabilized shock that won't drive up Cyanuric Acid levels.
This 25 lbs bucket of EZ Pool Refresh+ contains 73% calcium hypochlorite, providing a concentrated punch to oxidize organic contaminants and kill algae. Unlike standard 65% granules, this higher concentration means you use less product to achieve the same breakpoint chlorination. It is a proven choice for heavy bather loads or post-storm recovery where rapid sanitization is required without adding stabilizer.
Benefits & What Makes It Different
73% Available Chlorine
This high-potency formula delivers more sanitizing power per pound than standard retail shocks, making it more efficient for clearing cloudy water.
Unstabilized Formula
Because it contains no Cyanuric Acid (CYA), you can shock your pool repeatedly without risking chlorine lock or needing to drain water to lower stabilizer levels.
Fast-Dissolving Granules
RE-FRESH+ is engineered to dissolve quickly, reducing the risk of bleaching vinyl liners when pre-dissolved or broadcasted correctly in deep ends.
Product Details
Calcium Hypochlorite 73%
1 lb per 10,000 gallons for maintenance; 2-3 lbs per 10,000 gallons for algae treatment.
Compatibility
- Do not mix with Dichlor or Trichlor tablets (dangerous chemical reaction)
- Pre-dissolve in a bucket of water before adding to vinyl liner pools to prevent bleaching
- Wait for chlorine levels to drop below 4ppm before swimming
When To Use This
Pro Tip
In hot climates like Arizona or Texas, high UV index burns off chlorine rapidly; always apply this shock at dusk to ensure the 73% calcium hypochlorite works overnight without being degraded by the sun.
Common Questions & Instructions
How much Refresh+ 73% shock do I need for a 20,000-gallon pool?
For a standard weekly treatment, use 1 lb per 10,000 gallons, so 2 lbs total for your 20,000-gallon pool. If you are fighting visible algae, you may need to double or triple that dose to reach breakpoint chlorination.
Does this pool shock raise my calcium hardness levels?
Yes, as a calcium hypochlorite product, it adds a small amount of calcium to the water with every dose. This is beneficial for plaster pools but should be monitored in areas with naturally hard water to prevent scaling.
How long should I wait to swim after using RE-FRESH+?
You should wait until the free chlorine level has dropped to between 1 ppm and 4 ppm. This typically takes 8 to 24 hours depending on the starting dose, water temperature, and sunlight exposure.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
