top of page

Aqua Sky - Since 1998



we'd love to hear from you

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.)

Universal replacement filters for reverse osmosis water systems the original organic cellulose replacement filters, Universal under sink 4 stage systems, all the standers universal  Reverse osmosis water systems replacement filters include 2 or 3 pre-filters and a membrane that must be replaced periodically. The different filters represent the different 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 Organic RO membranes can last as long as 5 years Stage

stage 1-

  • Sediment filter is the first filter installed in all brands, all models universal standerd size 10" Reverse Osmosis water filters systeme . The main function of a sediment filter is to remove large and fine particles from a drinking water, such as sand, dirt, silt, and rust particles. Removal of such particles allows for a better performance of all the following filters, such as carbon block or GAC filters.
  • Micron rating: 5 Micron.
  • Dimensions: ( 10" ) x 2.5"
  • Lifetime: Replace every year, depending on the water quality.
  • This filter is wrapped and sealed and meets NSF standards and regulations.
  • Filter will fit any residential reverse osmosis unit that features standard 10” filter housing Stage

stage 2-

  • Universal size Organic activated carbon filter are well-known for their highly efficient reduction of chlorine taste and odor taste and odors of many organic chemicals and volatile organic compounds.
  • All carbon filters are made with Organic high quality coconut shell carbon.
  • Micronrating: 5 Micron.
  • Dimensions: (9" ) x 2.5"
  • Lifetime: Replace every year, depending on the water quality.

This filter is wrapped and sealed and meets NSF Standards and Regulations. Filter will fit any residential reverse osmosis unit that features standard 10” filter housing

stage 3-

  • Organic reverse osmosis membrane 50 Gallon per day NSF certified Thin film TFC membrane is the main component of any universal Reverse osmosis unit.
  • Made with 100% Organic fine thin film flat sheet
  • 99% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water.


Only the organic membrane has The micron rating of a thin film less than 1/10000th of a Micron
which is 620,000 Times finer than A human hair 2,500 Times smaller than bacteria 20 Times smaller than any virus .

Product Features:

  • 50 Gallons per day (15.8 Liters per Hour) capacity
  • 99% Stabilized salt rejection (Minimum Rejection 97%)
  • NSF/ANSI standard 58 listed
  • Operating Conditions Performance specifications based on 500 ppm tap water, 50psi (0.35 MPa) applied pressure, 77°F (25°C) feed water temperature, feed water pH 7-8 and 15% recovery. Element permeate flow may vary ± 15%.
  • Maximum operation pressure: 125 psi (0.86 MPa)
  • Maximum feed flow rate: 2 gpm
  • Maximum operating temperature: 113° F (45° C)
  • Maximum feed water turbidity: 1 NTU
  • Maximum feed water SDI (15min): 5
  • Chlorine tolerance: 0
  • Feed water pH range: 2-11
  • Minimum brine flow to permeate flow ratio: 4:1


stage -4

Universal reverse osmosis under counter sink replasement Inline carbon Filter ,
this universal  inline filters is also known as ( polishing filters ) because they would usually be the last stage of any standard reverse osmosis circuit. Being made of high quality coconut shell carbon they stabilize the water tasting qualities and further remove any traces of bad tastes and odors.

  • Dimensions: 10 " x 2"
  • Lifetime: replace ones in 1- 2 years.

This filter is wrapped and sealed and meets NSF Standards and Regulations. Filter will fit  any residential reverse osmosis unit - osmosis water filters

Universal 4 Stage Reverse Osmosis Replacement Filters - Set Of 4 Cartridges

$122.00 Regular Price
$73.20Sale Price
  • Set Of 4  organic universal replacement filters cartridges under sink reverse osmosis water systems.

    4 stage RO systems uses a


    1- Sediment pre-filter usa made .

    2- Organic  block pre-filter usa made .

    3- Organic RO membranes with different flow rates usa made .

    4- Organic inline carbon filter coconut shell carbon



    • Universal 4 Stage Reverse Osmosis Water Replacement Filters.
    • US Water Reverse Osmosis Water Filters.
    • US Water Galaxy Reverse Osmosis Water Filters.
    • US Water Aquapurion Reverse Osmosis Water Filters.
    • Watts 4,5 stage Reverse Osmosis Water Filters.
    • Purevalue Reverse Osmosis Water Filters.
    • Proline Plus Reverse Osmosis Water Filters.
    • Proline Gold Reverse Osmosis Water Filters.
    • Nelson Reverse Osmosis Water Filters.
    • Isopure Reverse Osmosis Water Filters.
    • iSpring Reverse Osmosis Water Filters.
    • Tier1Reverse Osmosis Water Filters.
    • Hydronix Reverse Osmosis Water Filters.
    • Max Reverse Osmosis Water Filters.
    • AQUARIUM Reverse Osmosis Water Filters.
    • APEC Reverse Osmosis Water Filters.
    • APEX Reverse Osmosis Water Filters.
    • Titan Water Pro Reverse Osmosis Water Filters.
    • Home Pure Reverse Osmosis Water Filters.
    • Premier Reverse Osmosis Water Filters.
    • Blue Wave Water Reverse Osmosis Water Filters.
    • COP and all standard 5 stage RO Systems.
    • 4 stage ro filter replacement kit
bottom of page