Model # R20841-12
Alternate Part #'s LZA71428A
| Cal-Shock 65 | |
Power Blast Cal Shock 65 is 68%CalciumHypochlorite with 65% available chlorine. Our best selling shock treatment, Cal Shock 65 is in a fast dissolving granular form so it quickly destroys organic waste, algae and bacteria saving you time and money.
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| Pool Volume in gallons | Amount of Shock needed weekly if pool is clear | Amount of shock needed if pool is green |
| 10,000 gallons | 1 lbs. | 2 lbs. |
| 20,000 Gallons | 2 lbs. | 4 lbs. |
| 25,000 Gallons | 2.5 lbs. | 5 lbs. |
| 30,000 Gallons | 3 lbs. | 6 lbs. |
| 35,000 Gallons | 3.5 lbs. | 7 lbs. |
| 40,000 Gallons | 4 lbs. | 8 lbs. |
*Always follow the manufacturer's recommendations/directions located on the product container.Store any un-open bags in a cool and dry location
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I'm looking for pool shock to sanitize my drinking water. Will this work?
Reply
I have heard of people using pool shock to sanitize drinking water but I can not promote the use of any pool shock for this purpose. You will want to contact the NSF for further information.
Reply
I tested my chlorine levels and they were at 0, so I shocked it. This didn't bring the levels up at all. What could be the problem and what should I do?
Reply
If your chlorine level remained at 0 after shocking, I would recommend checking the pH, alkalinity and cyanuric acid levels. I would also recommend checking the available chlorine percentage on the pool shock.
Reply
I have an in ground vinyl swimming pool and usually use liquid shock. I have heard that the granular shock is better but it's not for vinyl pools. Is there another type of shock that I can use that is stronger than the liquid?
Reply
You can use the granular shock but I would recommend adding it to a bucket of pool water to pre-dissolve it then pouring it along the perimeter of the pool.
Reply
My pool company uses liquid shock in my pool. Is this granular shock any better?
Reply
Yes. If you look at the labels of both products, you will find that liquid shock is weaker. The bottle has vented caps (to vent chlorine gas) so the longer it sits on a shelf, the weaker it gets. Granular shock is a lot stronger and does not lose its strength as long as it's stored properly.
Reply
Why do I need to shock the pool if I use chlorine tablets?
Reply
Chlorine tablets alone are not enough to keep the water sanitized. Pool shock helps to oxidize the water as well as breakdown chloramines.
Reply
The Most Recent Reviews
4 0
(5 out of 5 stars)
Reviewed By: KENNETH C. from Port Isabel Texas ()
as clear as the pool ever was!
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1 0
(4 out of 5 stars)
Reviewed By: K. K. C. from Orient, IA ()
Excellent product. Higher active ingredient percentage than you can get at local stores.
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1 0
(4 out of 5 stars) Great Pool Chlorine treatment
Reviewed By: John T. from Erin, TN ()
Pros: Good strength and reasonable price.
Cons: None
This is a great chlorine treatment. It is stronger than the shock that is available locally. I can use less and still maintain my pool.
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5 0
(5 out of 5 stars) Bought for Emergency Water Purification - Hope I never have to use it!
Reviewed By: Pool Shockin' Daddy from Boise, ID ()
Pros: Convenient 1 lb bags, shipped quickly, arrived in good shape
Cons: None. I would purchase from Inyo Pools again, if I had it to do it all over.
I ordered the Zappit 68% Calcium Hypochlorite to serve as an emergency source of water purification in the unlikely event of a disaster or disruption in clean, potable water in my area. Since this product, made by PPG, is NSF certified for purification of public drinking water, and since the practice is approved by the EPA, I thought it wise to stock up. In hindsight, 12 pounds was a bit excessive, and I have since given away several bags. Since Inyo Pools can't recommend this product for use beyond its stated purpose, they won't really provide instructions for use as a means of emergency drinking water purification. Consequently, if you choose to purchase this, or similar CalHypo products for that purpose, do your homework, and make sure to research (the EPA website should be your first stop) and know the EXACT amount to add to water to safely purify it. It would also be wise to print off several copies of these instructions, and keep them with the product, so when the time comes to use it, you're not relying on memory or guesswork to safely purify your drinking water. Also, remember that since Zappit and similar CalHypo products are highly corrosive, be sure to store the product safely.
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1 0
(5 out of 5 stars) Great Product!
Reviewed By: Robert B. from Medford, OR ()
This product is really the best I've found for 100% Hypochlorite. I am always please with products I get from inyopools.com. I recommend this product and inyopools.com to my family and friends.
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1 0
(5 out of 5 stars) Cal Shock 65
Reviewed By: Robert M. from Stafford, VA ()
Pros: Quick shipping and easy to deal as a pool owner.
Cons: None to date.
We have been ordering from Inyopools for over 1 year. We have been happy with this shock for our inground 25K galllon pool. It dissolves well and has not bleached our liner.
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(5 out of 5 stars) Chlorine
Reviewed By: Janice D. from Hillsboro, MO ()
When the product arrived it was well packed and arrived just a few days after I ordered. I am very pleased with this product and you company.
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(4 out of 5 stars) shock
Reviewed By: tripp from Woodstock, GA ()
Good Shock. Nice that it arrived at the door quickly.
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(5 out of 5 stars) Great Price same as other Name Brand
Reviewed By: MiamiHeat from Boise, ID ()
Pros: same as name brand
Cons: not sure volumne (gallons) of water it is rated for
Great product for the price. Im not sure the volumne (gallons) the product is rated for but it appears to be 10,000 gallons and still a great deal at the price.
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(5 out of 5 stars) Great Swimming Pool Products
Reviewed By: Steve from Bennettsville, SC ()
Pros: Quick, Quality, and Communicative.
Cons: Can't shake your hand and say, thank you.
Very pleased with quality of product. Shipping time was excellant. So glad we still have companies, that care. Thanks to your team for such great product and service.
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(4 out of 5 stars) Works well as pool shock cleaner
Reviewed By: K. K. C. from Orient, IA ()
Pros: High percent of active cleaner
The pool shock worked very well. It was very economical, especially when compared to shock and swim or 'super' shock you can purchase at Walmart. These products while seem cheaper do not have the high percent of cal. hypo that this product does. This makes purchasing this product a much more efficient cleaner producing a much cleaner pool with crystal clear, inviting water. You do not have to use as much to get the great results as you do the cheaper products. The old adage 'you get what you pay for' is especially true in this case. We highly recommend this product. And purchasing it from InyoPools. Very fast delivery. We ordered online and received our order within four days and that was with a weekend in the middle.
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(5 out of 5 stars) Great Value
Reviewed By: ruger95 from West Berlin, NJ ()
Great price with quick receipt.
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(5 out of 5 stars)
Reviewed By: Earlw from Valrico, FL ()
Pros: Excellent shock, worked well last year, I'm sure it will in the future
Cons: None
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(5 out of 5 stars) Quality shock treatment, good price, fast delivery
Reviewed By: Mikhail K. from Arcadia, OK ()
Pros: As advertised
Cons: None
Everything as expected. The granules dissolve before reaching bottom, and the shock works well for 3-4 days
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(5 out of 5 stars) Shocked
Reviewed By: ruger95 from WEST BERLIN, NJ ()
Packaged arrived promptly, and worked as advertised wiill purchase more next season.
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(4 out of 5 stars)
Reviewed By: Buckeye from Chillicothe , OH ()
Pros: Worked well.
Cons: None.
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(4 out of 5 stars) pool shock
Reviewed By: Barbara M. from NJ ()
I was very satistied with this product. I also love not having to travel to the pool store and stand in line over the summer.
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1 1
(5 out of 5 stars) Great Swimming Pool Cleaner
Reviewed By: ALPHA1 from OLEY VALLEY, PA ()
Pros: GOOD PRODUCT
Cons: NONE
COMPETITIVE PRICES AND A QUICK SHIPPING. NEXT TIME I'LL BUY A LARGER QUANTITY FOR A BETTER PRICING.
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