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.
For More Pool Chemicals
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) Fast Working, Good Quality
Reviewed By: Inyo Customer ()
Power Blast Pool Shock is fast-working, good quality and well packaged.
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
arrived quickly and met with all our needs. priced fairly and sure beats going out and picking up items lecally.
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
High quality, grest 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) Power Blast WORKED GREAT !!
Reviewed By: Inyo Customer ()
It cleared up our green pool in 24 to 36 hrs
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
Did it's job. Quick shipping.
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(5 out of 5 stars)
Reviewed By: Wesley C. ()
A little goes a long way
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(5 out of 5 stars) excellent
Reviewed By: Inyo Customer ()
works well and very reasonably priced. Quick delivery too
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(5 out of 5 stars) Great Product
Reviewed By: Inyo Customer ()
After going through a few different types of shock, I tried Power Blast Shock (68% Cal. Hypo.) that I purchased from inyopools.com. The Power Blast Shock is the best that I've used so far. One 1 lb. bag a week in my pool and it keeps my weekly chlorine reading right on the money. I don't believe that I'll be experimenting with different shocks anymore. If it ain't broke, don't fix it.
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
Clears a Cloudey Pool
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(5 out of 5 stars) Great Pool Shock
Reviewed By: Linda S. from Romeo, MI ()
Love the shock and love the price. I'd highly recommend this product. High quality and a great value. Think twice before buying local and paying way too much for your pool needs.
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(5 out of 5 stars)
Reviewed By: Joseph V. ()
Good product, great price . I'm paying alot less than I do at the local pool supply store.
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(5 out of 5 stars) Easy to use shock packs
Reviewed By: Adam B. from Olalla, WA ()
Weekly shock packs, easy to use. Could use a more sturdy box for storage, my box was broken when I recieved it.
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(5 out of 5 stars) Great Product
Reviewed By: Prather W. from Baton Rouge, LA ()
Pros: Does the job everytime
Cons: None
I've used many different shock products and I find this one to consistently be the best!
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(4 out of 5 stars) Works well
Reviewed By: Ronald R. from Hingham MA ()
Pros: effective
Cons: Pefer the 725 VERSION
Effective however prefer 72% formula 72% dissolves more completely leaving no silt to accumulate at pool bottom.
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(4 out of 5 stars) Good Shock Product
Reviewed By: Linda S. from Michigan ()
Good value for the price.
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(5 out of 5 stars) Great product
Reviewed By: Prather W. from Baton Rouge, LA ()
Pros: True strength
Cons: None
The Power Blast Shock is the best I have used. It is true to the number of gallons stated on that it will treat and it gets the job done.
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(5 out of 5 stars) Inyo pool Power Blast Shock
Reviewed By: Diane M. from Columbus, Ohio ()
Good company with quality products and competitive pricing. Usually ships within a couple of days
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(4 out of 5 stars)
Reviewed By: Donald T. ()
good producy,easy to use
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(4 out of 5 stars) Great Shock Treatment
Reviewed By: Charles G. from NY City ()
I used it and the Pool was crystal clear but had a white residue that needed to be vacuumed. to prevent this I used an empty Bleach bottle poured half the contents in and added pool water to dissolve the chemicals before spreading them into the pool this reduced the white residue but I still had to vacuum the pool before use.
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(5 out of 5 stars) pool shock
Reviewed By: Barbara M. ()
I am very satisfied with this product, it keeps my pool very clean, clears up just about any problem I am having with the pool water.
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(5 out of 5 stars) Great chlorine granules!
Reviewed By: Philp L. from Miramar, Fl ()
Pros: great chlorine release, no stabilzer
Cons: 1 bag = 1 jug liquid chlorine
Fantastic slight slow release chlorine granules without stabilizer! I tend to get over stabilized when using stabilized granules alone (tri-chlor). These are the perfect supplement that aren't stabilized. No more liquid chlorine!!
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(5 out of 5 stars)
Reviewed By: Ken A. from wellington, ks. ()
a few bags of blast pool shock and my pool is good to go every day of the week.
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(5 out of 5 stars) Keeps Pool clear
Reviewed By: Candace W. from Anniston, Alabama ()
Pros: Strong enough to do the job
Cons: none
I just started using this shock this year and have been pleased that as much rain as we had, my pool continues to be crystal clear with no algae or green water.
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(4 out of 5 stars) shocking
Reviewed By: Earl R. from shamokin, pa ()
Pros: easy to use
I used Power Blast Pool Shock and it worked pretty fast, within one hour I could see my pool becoming less cloudy and the yucky stuff on the bottom of the pool was gone.
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(4 out of 5 stars) Very Good Shock Product
Reviewed By: Maurice C. from Gordo, AL ()
Pros: Great easy to open container box.
Works really well. When compared to other pool shock product, the value and quality is incomparable.
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(5 out of 5 stars) Great Shock
Reviewed By: Pickdog from Austin, TX ()
works well and fairly priced!
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(5 out of 5 stars) SHOCK
Reviewed By: Gerard F. from Sayreville, NJ ()
Power Blast Pool Shock
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(5 out of 5 stars) Simple repetative pool treatment
Reviewed By: Matt E. from Champlain, VA ()
I like this product. It is safe, easy and used consistently will keep your pool looking nice
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(5 out of 5 stars) Just like others but cost less $
Reviewed By: MiamiHeat from LA, Calif ()
The title says it all - cheaper than others but performs the same.
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(5 out of 5 stars) cleaner and shock.
Reviewed By: Donald M V. from Idaho falls, ID ()
works fine when I close the slots on the float just a little.
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(5 out of 5 stars) Store extra, for an emergency situation.
Reviewed By: Scott in Wisconsin from Fond du Lac, WI ()
Pros: Great for disinfecting drinking water in a pinch
This is a fine pool product. But in a pinch, you can also use it to disinfect drinking water. If you have a natural disaster in your area, and your local water system shuts down or is compromised, good drinking water is gone very quickly. With this product, you can make 10,000 gallons drinkable. Help friends and neighbors in an emergency.
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(5 out of 5 stars) I believe that this product is much better than the Pooltime brand of shock; it shot up the Chlr level and made the pool water look far better.You have a regular customer now!
Reviewed By: pedram from Walnut Creek, CA ()
Pros: fabulous product
Cons: nothing I can think of
I'd definitely buy this product again and again.
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(5 out of 5 stars) the shocking difference!
Reviewed By: greenpool from San Diego, CA ()
Pros: easy to use one pound bags
Cons: I should have monitored Cl level to know how much to use
this did the job... turned a scary dark green pool into a bright and cheery one.
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