BioGuard Burnout 73 1 lb. | Pool Superchlorinator

BioGuard Burnout 73 is a superchlorinator built for maximum oxidizing power — 73% calcium hypochlorite, the highest concentration in the BioGuard shock line. One 1 lb bag treats 16,500 gallons, which makes it one of the strongest shocks available.

What you're paying for is concentration. A higher percentage of active ingredient means more oxidizing capacity per bag, fewer bags to handle and store, and a shorter trip to the equipment pad. On a larger pool or a pool that needs shocking frequently through a hot summer, that adds up.

The other defining property is what it doesn't contain. Burnout 73 is unstabilized — calcium hypochlorite carries no cyanuric acid and contributes none to the pool. That matters more than most owners realize. Every dichlor-based shock and every trichlor tablet permanently adds stabilizer, and stabilizer never evaporates, burns off, or filters out. Once it climbs high enough, free chlorine becomes progressively less effective at the same test reading — the pool reads properly chlorinated and behaves like it isn't. Owners hit this in August, wonder why their pool "stopped holding chlorine," and add more product to a problem more product can't fix.

A cal hypo superchlorinator sidesteps that entirely. You get a strong oxidizing dose with nothing accumulating behind it, which makes Burnout 73 the right choice on any pool already carrying a high stabilizer level — and a sensible default on a pool fed by trichlor tablets, since the tablets already supply all the cyanuric acid the water needs.

It's quick dissolving, works with all pool surfaces, and handles the jobs a shock is actually for: destroying organic contaminants, reducing organic contamination, and restoring sparkle and clarity to water that has gone dull.