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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.)

Set Of 3 original organic replacement filters cartridges standard size all 5 stage under sink reverse osmosis water systems.

  • Aquasky Rot-4 reverse osmosis replacement filters filters cartridges.
  • Tankpro Pro 3.2 & 4.4 reverse osmosis replacement filters cartridges.
  • PA-E reverse osmosis Ro-132 replacement filters cartridges.

Aquasky rot-4 Original Organic Set Of 3 Replacement Filters

SKU: 0001
  • 5 Stage aquasky under sink reverse osmosis water systems include 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.100% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water, the main stage in this systems is the RO membrane and all of the other replacement filters are serving and providing protection to that membrane, if the pre-filters fail to work due to poor quality, that means your RO membrane will not give you 100% reduction rate.


                 Stage 1 - Pre-Membrane reverse osmosis sediment filters

    •  High-Grade 5 micron high-capacity sediment filter 

    • Remove larger particles & suspended matter such as dirt, silt, rust, sand from water.   

    • Protects and extends the life of the membrane and system.
    • Recommend replace every 8-12 months, varies depend on the water source quality   
    • Standard Size aquasky rot-4 water filters 24-3/4" / 10" 5.5 /15-( 97%)

    • Stage (1) Pre-membrane

    Stage 2-
    Original organic activated carbon GAC 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 GAC filters are made with organic high quality coconut shell carbon.

    • Micron rating: 5 Micron.
    • Dimensions: ( DXI 8.2 X 1/4 - 7/8") x 2.5"
    • Lifetime: please 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 smosis unit that features standard 10” filter housing ( look for compatible systems list )

     Stage 3 :-

    •  Original organic CTO coconut shell carbon block filter
    • Forceful remove pesticide residues in water, water pollution odor of ozone, chlorine removal of residual heavy metals, bacteria, sterilization.
    • Standard Size 24-3/4" / 10" 5.5 /15-( 97%)pxi - CVM.

    • Recommend replace every 8 To 12 months.

    • Protects and extends the life of the membrane and system.

    • Stage (2) & (3) Pre-membrane




    • US Water Reverse Osmosis Water Filters.
    • US Water Galaxy Reverse Osmosis Water Filters.
    • US Water Aquapurion Reverse Osmosis Water Filters.
    • Watts 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.
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