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Aqua Sky - Since 1998



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Active  website / last updated February 2023

Order Processing

  • Orders will be dispatched within one business day after an order has been received.

  • Orders placed on Friday after 3pm (Pacific Time) will begin processing the following Monday.

  • Confirmation email will be sent to customers once the order has been dispatched.

  • please feel free to contact us for any additional information by email -
  • tel U.S.A (954)297-5093  -  Worldwide Toll free number 1 (1800-551-3221)

Returns Accepted

  • within 10 days of the date you received your order .

  • Full refunds will be made in the same form of the original payment  .

  • Items must be returned unused, and must be in its original packaging and boxes .

  • refund will be same day we receive the item.  

  • please contact us by email before you ship items back to us -

Free  From The Following Locations :-  ​


(New York U.S.A.)

(California U.S.A.)

(Ontario Canada.)

(Athlone, Dublin Ireland.) 

(Manchester, U.K.)

(Dijon, France.)

(Nürnberg, Germany.)

(Kapfenberg, Austria.)

(Alice Springs, Australia.)

Set Of 4 (RO) Replacement filters PA-E RO-122 Reverse Osmosis These filters boast a 99% Reduction rate of bacteria, pesticides, herbicides, and heavy metals in tap water. The main stage of the PA-E RO-122 system is the RO membrane, and all other replacement filters protect and maintain the RO membrane's effectiveness. If the pre-filters fail due to poor quality, the RO membrane will not provide a 99% reduction rate.


You can purchase PA-E RO-122 replacement filter cartridges online, including all four stages of filters for under-counter sink parts.


The system includes three pre-filters and a membrane that must be periodically replaced. The different filters represent the various stages that the water goes through while being purified. Generally, pre-filters and post-filters in RO systems can last around 8 to 12 months between changes.

Only the original PA-E RO-122 RO membranes can last 5 years.


The sediment cartridge is the first filter installed in the PA-E RO-122 Reverse Osmosis water filter system. Its primary function is removing large and fine particles from drinking water, such as sand, dirt, silt, and rust. Removing such particles allows for better performance of all the following filters, such as carbon block or GAC filters. The micron rating for this filter is 5 Microns, and its dimensions are 9.75" x 2.5". It needs to be replaced every year, depending on the water quality.


The second stage of the PA-E RO-122 filter system includes original PA-E RO-122 activated carbon block filters made of fine coconut shell carbon, which removes odors and tastes of many organic compounds, especially chlorine. The filter is made of packed carbon, forming a cylinder block, and offers a much finer filtration of suspended particles and dirt. The micron rating for this filter is 5 Microns, and its dimensions are 9.75" x 2.5". It needs to be replaced every year, depending on the water quality.


The third stage of the PA-E RO-122 filter system includes a 50 Gallon per day NSF certified thin film TFC membrane, the main component of the PA-E RO-122 Reverse Osmosis unit. Made with a 99% organic fine thin film flat sheet, this filter boasts a 99% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water. Only the original PA-E RO-122 reverse osmosis membrane has a thin film micron rating of less than 1/10000th of a micron, 620,000 times thinner than a human hair, 2,500 times smaller than bacteria, and 20 times smaller than any virus. The filter is rated for 50 gallons per day (15.8 liters per hour) capacity and 99% stabilized salt rejection. It meets NSF/ANSI standard 58 and is designed for residential reverse osmosis units. It needs to be replaced periodically, depending on the water quality.


The fourth and final stage of the PA-E RO-122 filter includes an inline carbon filter, also known as a polishing filter. Made of high-quality coconut shell carbon, this filter stabilizes water-tasting qualities and removes any traces of nasty tastes and odors. Its dimensions are 10" x 2", which must be replaced every 1-2 years.


All PA-E RO-122 filters are wrapped and sealed and meet NSF Standards and Regulations. Filter replacements fit residential reverse osmosis units - PA-E RO-122 Reverse Osmosis Water Filters.

PA-E Reverse Osmosis RO-122 Replacement filters Cartridges And Membrane Set Of 4

  • 4 Replacement filters for your PA-E RO-122 Reverse osmosis under-counter sink system? Look no further! We offer a set of four standard-size replacement cartridges that work with all four-stage under-sink reverse osmosis water systems. Our filters are also compatible with the Tankpro Pro 3.2 and 4.4 reverse osmosis systems. These organic replacement filters are specifically designed for use with under-counter four filter units. Trust us to provide the best quality replacement filters for your system.

  • US Water RO Systems,

    US Water Galaxy, US Water Aquapurion,

    Watts 5 stage systems,


    Proline Plus,

    Proline Gold,






    Max Water Systems,




    Titan Water Pro,

    Home Pure,

    Premier Water System,

    Blue Wave Water,

    COP and all standard 5 stage RO Systems.


    Also Compatible With: 5EZ50, GTS-550S, NRO05-50, 200-GX-5050, ISO-RO5 GTS-550, Tier1, RO5-WF, RO550-W, W-525, WP5-50, RCW5

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