Name: Pool Shock 68 - 15lb
Brand: Standard Chemicals
SKU: 590716
Price: 72.99 USD
Availability: InStock

15 lb bucket · $4.80 a bag

Pool Shock 68 - 15lb

Pool-store chemistry without the pool-store markup. Our 68% calcium hypochlorite is the highest-strength shock we produce, tested in-house several times a day, then packed as fifteen sealed 1 lb bags in a handled 15 lb bucket. At $4.80 a bag it is the lowest price per shock we sell, and one bag treats a 10,000-gallon pool. It is unstabilized, so it adds no cyanuric acid, and it dissolves fast, poured straight in or pre-mixed first. Suits vinyl, concrete and fiberglass pools. Delivered straight to your door.

Ships in 1–2 business days

DELIVERED STRAIGHT TO YOUR DOOR

Lower 48

Product Specifications:

Title

Lowest Price per Bag: $4.80 a bag, our best value per shock

68% Calcium Hypochlorite: our highest-strength pool shock

One Bag per 10,000 Gallons: fewer bags per treatment, less spent

15 Sealed 1 lb Bags: three more shocks than the 12 lb bucket

Unstabilized (Adds No CYA): no stabilizer to drain out later

Rapid Dissolution: dissolves fast, poured straight in or pre-mixed first

Suits Most Pool Surfaces: vinyl, concrete and fiberglass pools

Made in the USA: produced, tested and date-coded in-house

Convenient Bucket: sealed storage with an easy-carry handle

Not sure how many bags you need? One bag shocks 10,000 gallons.

SHOCK CALCULATOR

What you're paying for

Cal-hypo. Not the building it sat in.

A pool store bag of shock carries a warehouse, a distributor, a storefront and a markup. Take all of that out and here is what's left: fifteen sealed pounds of 68% cal-hypo and a bucket to keep them in.

Where the money actually goes

Four ways cheap shock gets expensive

A low price on the wrong shock isn't a saving. You find out when you're buying a second bag to fix what the first one didn't.

stabilizer you pay to remove

Stabilized shock adds CYA every time you use it. Push CYA too high and chlorine stops working, and the usual fix is draining water, the most expensive chemical in the pool.

shock the sun burns off

Add unstabilized chlorine at noon and a good share of it goes to the sunlight, not the algae. Shock at night and the bag you paid for does the work you bought it for.

the half bag that goes damp

Open a big bag, use some, fold the top over, and the rest takes on moisture in the garage. Sealed one-pound bags mean nothing you paid for sits open.

the trip itself

An hour of your Saturday, the fuel, and a bag carried home in your own car. This bucket comes straight to your door instead.

See the full comparison

Why there's no middleman in the price

We're the manufacturer. The shock is produced on our line, tested several times a day, packed in-house and sent to your door. Every step we don't outsource is a margin nobody gets to add.

60M+

Pounds produced a year

20+

Years in pool chemistry

100%

Of the supply chain, in house

Scale is why the price works. There's no sale price here, this is simply what it costs.

Four steps, one bag, one evening

An evening, not a Saturday

Test first. If pH is outside 7.2 to 7.6, fix that before you shock. High pH wastes the chlorine you're paying for.

Run the Pool Shock Calculator. It rounds up to whole bags. One bag covers a routine shock on 10,000 gallons, so 20,000 gallons is two bags, or $9.60. Algae doubles it.

Pour the bags in around the edge at night, pump running. If you pre-mix, add shock to water, never the reverse.

Leave the pump running for 8 to 12 hours. Test again, and swim once free chlorine is back in range. That's the whole treatment.

Never let shock touch tablets, other pool chemicals or a splash of water in the bag. That's a fire risk, not a shortcut.

Work out your shock cost

What's in the bag

Every line of this is on the SDS

68% means 68%. The other ingredients are named on the Safety Data Sheet we publish, in English and Spanish. Take it to any shelf and compare.

Calcium Hypochlorite

Cal-hypo · 68% · CAS 7778-54-3

Calcium hypochlorite at 68%, the same unstabilized chlorine pool professionals shock with. It releases free chlorine as it dissolves and leaves no cyanuric acid behind. Nothing exotic, just the active at the strength on the label.

What the rest of the bag is

Calcium chloride, 1.5 to under 5%

Calcium hydroxide, 1.5 to under 5%

Calcium carbonate, 1.5 to under 5%

No cyanuric acid, unstabilized

Exact concentrations: trade secret (SDS)

Fifteen sealed pounds, and the SDS says exactly what is in each.

Ours, and the one from the shelf

Same shock, same pool, same job. Here's what changes when you buy it from us.

15 lb of 68% pool shock		Typical Shelf Brand
Priced direct from our facility, $72.00
Tested daily, 68% calcium hypochlorite
Sealed 1 lb bags, open one, use one
Date-coded at production
Delivered straight to your door
Producer and SDS clearly published

Title

The shock the pros use, without the Saturday errand.

Title

Ships In 1 to 2 Business Days

Professional-Grade Strength

Made In The USA

Fast-Acting Shock

Date-Coded At Production

Full strength, or you don't pay for it twice

Fresh from the line

Shock sitting in a hot warehouse and then on a store shelf loses strength before you ever open it, and nobody refunds the difference. You paid for 68%. Ours ships sealed and date-coded from our line, guaranteed at full labeled strength when it reaches you. Damaged on arrival, we replace it free. No return required, nothing to ship back.

Straight from the manufacturer

Guaranteed full labeled strength

Date-coded at production

The questions worth asking about price

Including the one about 56% versus 68% that shops rarely answer straight.

Does shipping eat the saving?

Shipping is calculated at checkout by weight and destination. Put the bucket in your cart and check the delivered number against your local store before you commit. Fifteen bags in one delivery also means fewer orders across the season.

What does one shock actually cost me?

$4.80 a bag, and the calculator rounds up to whole bags. A routine shock on 10,000 gallons is one bag; on 20,000 gallons it's two, or $9.60. Algae or a green pool doubles the dose. Test pH first so none of it is wasted.

Is 68% better value than 56%?

Per shock, yes. A routine shock on 10,000 gallons takes one bag of 68% or two bags of 56%. In this bucket a 68% bag costs $4.80, against $5.42 a bag in either 12 lb bucket, so this is the lowest cost per treatment we sell.

Will it raise my cyanuric acid?

No. Cal-hypo is unstabilized, so it adds no CYA. That matters for your budget: once CYA climbs past roughly 100 ppm chlorine stops working properly, and the fix is replacing water, not buying more chemicals.

Can I mix it with my tablets?

In the pool, yes. In the same feeder, floater, chlorinator or storage container, never. Calcium hypochlorite and trichlor in contact is a fire hazard.

Where do you ship?

Lower 48 only. No Alaska, Hawaii, territories, APO/FPO or P.O. boxes. Ships in 1 to 2 business days, then 2 to 4 days on UPS Ground.

Two products, one line

Shock handles fast recovery; tablets handle the steady week in between. Both are produced in the same operation, tested to the same standard, and shipped from the same dock.