PoolRx+ Blue/White 4 Packs 7.5K–20K Gallons | Swimming Pool Algaecide
PoolRx+ Blue/White 4 Packs 7.5K–20K Gallons | Swimming Pool Algaecide
Buy the easiest swimming pool algaecide with PoolRx+ Blue/White 4 Packs. Shasta Pool Supply delivers the lowest prices and fastest shipping on all pool care chemicals. Specifically, the 7.5-20k gallon pool algaecide ships free.
PoolRx+ Blue/White 4 Packs 7.5K–20K Gallons
The Blue/White 4 Packs say goodbye to algae and hello to crystal-clear water. Furthermore, this powerful PoolRx+ algaecide provides effortless pool care. Specifically, 4-packs treat swimming pools with 7,500 to 20,000 gallons of water.




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Key Features
- Eliminates all types of algae for up to 6 months
- Reduces chemical demand, saving you time and money
- Simplifies pool care for a hassle-free swimming experience
- Ideal for both traditional and salt water pools
Technical Specifications
The PoolRx+ Blue/White unit contains a carefully formulated blend of active ingredients:
Copper Sulphate Pentahydrate (86.85%)
Zinc Sulfate Monohydrate (1.51%)
Silver Nitrate (0.40%)
Specs
- Part Number: 331003
- Manufacturer: PoolRx+

Installation Directions
PoolRx+ Blue & White w/ Silver 7.5k-20k Gallons
- Ensure your pool water iEnsure your pool water is balanced and chlorine levels are below 10 ppm
- Place the PoolRx+ Blue/White unit in your skimmer or pump basket
- Allow the minerals to dissolve (approximately 6 hours)
- Maintain regular pool chemistry and cleaning routines balanced and chlorine levels are below 10 ppm
- Place the PoolRx+ Blue/White unit in your skimmer or pump basket
- Allow the minerals to dissolve (approximately 6 hours)
- Maintain regular pool chemistry and cleaning routine

How it Works
Swimming Pool Algaecide PoolRx+
How It Works: PoolRx+ utilizes a proprietary blend of minerals and includes Copper Sulphate Pentahydrate, Zinc Sulfate Monohydrate, and Silver Nitrate. Furthermore, these minerals work synergistically with low levels of chlorine and create a powerful, long-lasting algae defense system.
In the Box: Each pack contains a specially treated alloy cylinder filled with PoolRx+ granular formulation. Additionally, it releases a stable mineral residual throughout your pool and continuously fights algae for up to half a year.
Easy to Use: Simply place the PoolRx+ unit in your pump basket or skimmer. Next, the minerals dissolve and circulate, rejuvenating each time they pass through the cylinder during filtration. Therefore, it's simple pool care!
Perfect for Salt Pools: PoolRx+ enhances your saltwater pool experience and reduces the need for salt chlorine production. Moreover, this extends the life of your salt cell and reduces acid requirements for pH balance. Therefore, it improves overall water quality.
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Pentair IC40 Replacement Salt Cell Open Box
Regular price $1,249.00 USDRegular priceUnit price / per -
What our customers are saying
Shopping with Shasta was an excellent experience. I followed a link from an email from Shasta for a salt cell for my pool, which I needed. They advertised an open box deal which was hundres of dollars less expensive than anywhere else I could find the equivalent part for online.
I accidentlh placed an order for the part to pick up at the wrong location. Communicating through email, Zachary and Chuck quickly resolved the problem and changed the location to the location closer to my home.
I've also shopped for pool deck paint from Shasta. Not only was the price better than anywhere else I could find online, the product was available quickly from my store.
Shopping with Shasta was an excellent experience. I followed a link from an email from Shasta for a salt cell for my pool, which I needed. They advertised an open box deal which was hundres of dollars less expensive than anywhere else I could find the equivalent part for online.
I accidentlh placed an order for the part to pick up at the wrong location. Communicating through email, Zachary and Chuck quickly resolved the problem and changed the location to the location closer to my home.
I've also shopped for pool deck paint from Shasta. Not only was the price better than anywhere else I could find online, the product was available quickly from my store.
GLENN S
The customer service team quickly responded to my questions and helped me find the best option for my pool. Not only to keep my pool clean, but also save me money over the pool season!
The customer service team quickly responded to my questions and helped me find the best option for my pool. Not only to keep my pool clean, but also save me money over the pool season!
Amy M.
the online ordering and ship to home was fast, fair, and friendly.
the online ordering and ship to home was fast, fair, and friendly.
Jerry T.
FAQ
Our expert staff answers customer's most asked questions.
How often should I test my pool water?
Regular testing, ideally once a week, ensures that chemical levels are within the recommended range. This practice ensures that your pool is always ready for enjoyment.
What are the ideal chemical ranges for my pool?
Achieving a balanced pool involves maintaining a pH range of 7.2–7.8, total alkalinity between 80–120 ppm, calcium hardness at 180–220 ppm, and cyanuric acid (stabilizer) within 30–50 ppm. Chlorine levels should consistently fall within the 1–3 ppm range, by may need to be increased as CYA levels go above 60 PPM.
How frequently should I clean my filter cartridges?
The cleaning frequency is contingent on your filter's size. As a general guideline, initiate the cleaning process when the filter pressure exceeds the initial pressure by 10 psi. This ensures optimal filtration efficiency.
Learning Center
Blog posts
The latest news and guides making buying and maintaining pool equipment easier.
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Pool Chemical Balance Parameters and Ideal Ranges
How much chemicals should I put into my pool? What are the right chemicals? This guide offers pool chemical parameters and ideal ranges. The following table outlines the essential pool chemical...
Pool Chemical Balance Parameters and Ideal Ranges
How much chemicals should I put into my pool? What are the right chemicals? This guide offers pool chemical parameters and ideal ranges. The following table outlines the essential pool chemical...
Learn More