Model # R20841
| 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
Can I add shock through my automatic chlorinator?
Reply
No, you should never add shock through an automatic chlorinator. Never mix different types of chlorine. Pool shock can be added to a bucket of water and poured directly into the swimming pool.
Reply
I have an in ground pool with a mesh winter cover. Several weeks ago, I had added 2 gallons of chlorine to the pool. Since then, with the mesh cover still on, the water has turned green. I've been adding about a gallon of shock each week without improvement. Should I continue adding shock to the pool or should I wait?
Reply
I would recommend waiting until the pump and filter are running again before adding any more shock to the pool. Algae needs two things to grow: food and light. With a mesh winter cover, the algae has more than enough light to grow regardless of the shock that you're putting in. Also, shocking the pool without circulation can cause bleaching of the pool surface
Reply
My pool company recommends using a phosphate remover. Do you have any such item?
Reply
Less than 1 hr
Scissors
4 to 8 hrs
None
I made sure that the pool pump was on high and was running well. I cleaned the pool walls and brushed the algae to the deep end of the pool. I cut open twelve bags of Power Blast Pool Shock, empty the contents in a bucket and spread the Shock over the pool water. While everything was working, I used my brush to clean the steps in the pool and re-brushed the walls and bottom again.
Less than 1 hr
None
1 to 2 hrs
A ladder to stand on to brush the pool sides down.
Opened the pool and my son vacuumed the crud to waste. I added my stabilizer and let that filter for 48 hours. I brushed down the walls of the pool and added two pounds of Power Blast Shock to my pool and Super Algaecide, approximately 6 ounces and let filter for another 48 hours. Then I backwashed the system to clear the algae and rinsed the sand in the filter. It's been kind of cold here so I haven't been able to get in and vacuum yet, but there is very little left in the center of the pool to vacuum up. So the steps went into the pool yesterday and I will shock it again this evening and let filter again for 24 hours. I will vacuum, backwash, check the levels to make sure I'm oaky and then put the solar blanket on for the next couple weeks.
Less than 1 hr
None
I had a high combined chlorine count after having the test run locally at a hardware store. I use this product and it worked fantastically. I did dissolve it in a pill first but it says about 15 minutes and poured directly into the pool.
More than 8 hrs
None
Once I uncovered my pool the water was a nasty green and full of leaves. When I first used the shock all of the leaves on the bottom came to the top, making scooping a breeze. Now the water is clean and ready to go.
4 to 8 hrs
None
Less than 1 hr
Scissors to open the shock
I got rid of my old Chlorinator and installed a Rainbow 300-19 in it's place. I also switched from my old Shock and started using Robarb Power Blast Shock that I purchased from inyopools.com, the same place that I got the new Chlorinator from. PROBLEM SOLVED! I keep the Chlorinator on 1, and when the chlorine get's a little weak, after a week or so, I broadcast 1 bag of shock over the deep end of my pool and it snaps the chlorine right back to where it should be.
The Most Recent Reviews
(5 out of 5 stars) Super fast shipping and good price
Reviewed By: Inyo Customer ()
Super fast shipping and good price.
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
Works great
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
Good price and works well.
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(5 out of 5 stars) Cloudy dirty pool.
Reviewed By: Inyo Customer ()
East to use and worked very well. Best price on the web. Thank you.
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(5 out of 5 stars) Excellent product!
Reviewed By: Inyo Customer ()
Power Blast Pool shock is very effective and at a very affordable price point compared to Leslie's.
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
Worked as it should
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(5 out of 5 stars)
Reviewed By: Robert G. ()
Top quality Shock
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(5 out of 5 stars) Powerful and fast acting
Reviewed By: Inyo Customer ()
This is some powerful shock; much stronger than my local pool supply. Works fast ??
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(5 out of 5 stars) Quick results
Reviewed By: Inyo Customer ()
I like this product. Quick results.
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(5 out of 5 stars) shock
Reviewed By: Inyo Customer ()
works well
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
This stuff is great and so easy to use; conveniently packaged. Water is crystal clear after use.
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
Kept pool sanitized.
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(5 out of 5 stars) Good shock for chlorine pools.
Reviewed By: Inyo Customer ()
Shock works well as anything on the market.
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(5 out of 5 stars) Port chaos waiting for parts.
Reviewed By: Inyo Customer ()
Due to the pool motor and pump breakage, my pool turned green in no time. I purchased 6 pounds of Power Blast and every week I empty a package to control the algae. Due to the port troubles the part I ordered is somewhere in a container on the pacific. Do not take your pump apart until you receive the part. It would save you some headache.
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(5 out of 5 stars) Powerful
Reviewed By: Inyo Customer ()
powerful shock treatment works great
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(5 out of 5 stars) Best Shock I’ve Used and Well Worth the Current Price
Reviewed By: Inyo Customer ()
Prices for chlorine products has skyrocketed after the primary and largest manufacturer had a plant fire. This is a product that needs to be put into the pool water just about weekly so, the cost of maintaining the pool has increased significantly. Still, Inyo has always had this product in stock at a relatively reasonable price, especially for the 68% Calcium Hypoclorite mix.
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
Keeps my pool clean and clear. Performs as stated.
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(5 out of 5 stars) classic shock
Reviewed By: ptkelley ()
As advertized
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
Easy, convenient and it works great!
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(5 out of 5 stars)
Reviewed By: MelB ()
Love that its kind of a one and done
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(5 out of 5 stars) You can't go wrong with this stuff!!
Reviewed By: Inyo Customer ()
So far it has done a great job!! I found INYO pools last year when hunting for Top Caps and they have been wonderful to work with!!
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
fast delivery
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
Very Good
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
Best shock I have ever used!
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(5 out of 5 stars) Good product for the price
Reviewed By: Inyo Customer ()
Good product for the price.
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(5 out of 5 stars) Great product fast delivery
Reviewed By: Inyo Customer ()
Great product fast delivery
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(5 out of 5 stars) Great shock for Florida pools
Reviewed By: Inyo Customer ()
This is a great shock for Florida pools. It works fast, and keeps the chlorine level high for several days.
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(5 out of 5 stars) Great shock
Reviewed By: Inyo Customer ()
Great shock.
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(5 out of 5 stars) Works great!!
Reviewed By: Inyo Customer ()
Works great!!
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(4 out of 5 stars) Works like it should
Reviewed By: Inyo Customer ()
Ordered a box over memorial day weekend. What can I say: It's shock, works as advertised.
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(5 out of 5 stars) Pool supplies during shut down
Reviewed By: Inyo Customer ()
Great Price, Inyo sent items when I could not get them in my state do to store closures. Inyo is an easy company to deal with. Will buy from them again.
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(5 out of 5 stars) Easy to use
Reviewed By: Inyo Customer ()
Easy to use.
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(5 out of 5 stars) Good product
Reviewed By: Inyo Customer ()
Good product
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(5 out of 5 stars) Great Product
Reviewed By: Inyo Customer ()
Great product. Use according to directions and you will have nice, clear water all summer long.
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(5 out of 5 stars) Will buy again
Reviewed By: Inyo Customer ()
Good value, convenient.
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(5 out of 5 stars) Amazing
Reviewed By: Inyo Customer ()
This is an awesome product for the price! I will order it for my chlorine pool again.
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(5 out of 5 stars) Fast dissolving shock
Reviewed By: Inyo Customer ()
This shock actually is really fast dissolving & very effective
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(5 out of 5 stars) Works Well
Reviewed By: Inyo Customer ()
Works Well
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(5 out of 5 stars) Highly Recommend
Reviewed By: Inyo Customer ()
The best shock treatment I ever used. Would highly recommend must try
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(5 out of 5 stars) 5 Stars
Reviewed By: Inyo Customer ()
5 Stars
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