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💧 Shock your pool into perfection—because clear water waits for no one!
Rx Clear Mega Shock is a professional-grade pool treatment featuring 73% calcium hypochlorite in convenient 1-pound bags (48 pack). It acts as a powerful sanitizer, clarifier, and algicide, delivering rapid chlorine boosts and effective algae control. Designed for smart, easy dosing and optimized for nighttime application, it ensures your pool stays sparkling clean and swim-ready with minimal effort.







| ASIN | B073S9SD4P |
| Best Sellers Rank | #47,290 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #207 in Swimming Pool Chlorine |
| Brand | Rx Clear |
| Brand Name | Rx Clear |
| Customer Reviews | 4.7 out of 5 stars 686 Reviews |
| Item Form | Granular |
| Item Highlight | Kills Algae in Swimming Pools | Works As Pool Sanitizer Clarifier and Algicide |
| Item Weight | 48 pounds |
| Manufacturer | Rx Clear |
| Manufacturer Part Number | 20406348 |
| Model Number | 20406348 |
| Number of Items | 48 |
| Number of Packs | 48 |
| Product Benefits | Controls Algae, Maintains Clean Sanitized Water |
| UPC | 635963662035 |
| Unit Count | 768 Ounce |
A**K
Great shock!
Love it! I shock the pool every Monday and it is spotless!!
T**Y
Good product
We had good luck with this last year so bought it again this year.
A**L
Works!!!
My pool was swamp green when I took the cover off for the season. Then after cleaning it up it was super cloudy. I read about this stuff and decided to try it. I've used it twice and my pool is now crystal clear. I will be buying more and I even told my friends with pools about it 👍🏽 Super easy to use. It's a little expensive but it's worth it because I was spending money on other things that didn't work.
S**S
Good chlorine product
A great chlorine prime or sterile sterilizer I guess that we use during the week to occasionally help clean up the pool the stuff worked very well.
K**Y
shipping
good quality
G**N
Worked for me
Works just as well as Leslie’s 73 cal hypo shock, but cheaper. I was having a problem trying to get my free chlorine level to even register on my test strips. 2lbs of this shock (mixed in a bucket 1 lb at a time) sky rocketed my free chlorine levels. My pic of the pool is a little cloudy due to the chlorine level being high right now, but I’m sure that will resolve itself over the next few days as the levels come down. It’s been crazy 90 degree hot every day around here for a couple of weeks now. The test strip pic is from today, 2 days after I put the shock in a couple of nights ago. Next week if the fc level is low, I’m going to try 1lb instead of 2, and see what happens with the increase in free chlorine levels. If u want a jolt in your free chlorine levels, this stuff works.
A**R
Crystal clear pool water
Works great. I will reorder for next season
J**N
Recommend
I converted to a saltwater pool this year and this came highly recommended from a friend who uses it and they will write. It’s great. I’ve had no problems that were major of any kind this season and that’s a first in many years.
Trustpilot
2 weeks ago
2 days ago