Pentair 25021-0202S | Genuine OEM Sta-Rite Small Inner Filter for S8M150
Pentair 25021-0202S | Genuine OEM Sta-Rite Small Inner Filter for S8M150
-
For System 3 450' filter
-
Available in small and large cartridge replacement kit 170147
-
Square Feet: 191
-
Diameter: 12.5"
-
Length: 29.7"





Pool Supply Store
Limited Time Sale
Find the best pool equipment to complete your entire pool system. The lowest possible prices offered at fastest shipping.
-
Pentair IC40 Replacement Salt Cell Open Box
Regular price $1,249.00 USDRegular priceUnit price / per -
What our customers are saying
Easy. Seamless. Product was priced well, easy to order and shipped promptly. Will be a returning customer. Thank you for being a great company!
Easy. Seamless. Product was priced well, easy to order and shipped promptly. Will be a returning customer. Thank you for being a great company!
Gregory S.
Great. Received order timely. Product was as expected.
Great. Received order timely. Product was as expected.
MALINDA R.
Service was good. Good communication Fast shopping. No nonsense !!!!
Service was good. Good communication Fast shopping. No nonsense !!!!
Scott G.
FAQ
Our expert staff answers customer's most asked questions.
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.
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.
Does a solar panel for my pool effectively save energy?
Absolutely! The installation of a solar pool heater can significantly reduce your swimming pool heating costs, providing an energy-efficient solution.
Learning Center
Blog posts
The latest news and guides making buying and maintaining pool equipment easier.
-
How to Clear a Cloudy Pool Fast: A Pool Pro's S...
Cloudy pool water poses a serious health risk. Dangerous bacteria like E. coli and Legionella thrive in murky conditions. The problem goes beyond looks. Murky water stains pool walls and...
How to Clear a Cloudy Pool Fast: A Pool Pro's S...
Cloudy pool water poses a serious health risk. Dangerous bacteria like E. coli and Legionella thrive in murky conditions. The problem goes beyond looks. Murky water stains pool walls and...
Learn More -
8 Types of Pool Cleaners Compared: Costs, Featu...
A clean, sparkling pool can boost your property value by 7.7%. Finding the right pool cleaner makes a huge difference in protecting your investment. Pool cleaning options range from automatic...
8 Types of Pool Cleaners Compared: Costs, Featu...
A clean, sparkling pool can boost your property value by 7.7%. Finding the right pool cleaner makes a huge difference in protecting your investment. Pool cleaning options range from automatic...
Learn More -
How to Open Your Pool for Spring: A Pool Pro's ...
Did you know that opening your pool early in spring can actually prevent algae blooms? That's right, the cooler spring water combines with proper chemical treatments and creates an environment...
How to Open Your Pool for Spring: A Pool Pro's ...
Did you know that opening your pool early in spring can actually prevent algae blooms? That's right, the cooler spring water combines with proper chemical treatments and creates an environment...
Learn More -
Warning Signs You Need a New Pool Filter Cartridge
Pool filter cartridges typically last one to three years. However, many pool owners aren't sure about the right time to replace their cartridges. Some people keep them for 3-5 years...
Warning Signs You Need a New Pool Filter Cartridge
Pool filter cartridges typically last one to three years. However, many pool owners aren't sure about the right time to replace their cartridges. Some people keep them for 3-5 years...
Learn More