top of page

Aqua Sky, inc. Since 1996



 Worldwide Shipping From The Following Locations

Order Processing


  • U.S.A, Canada, Europe and Australia free shipping all orders.

  • 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 

  • (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 Water filters replacement for 4 stage pa-e ro 132( long filters ), Aquasky rot-6 and Aquasky rot-14, flexcon fro 122 ( For complete list please look down for compatibility ) 18-35 gallons membrane, get all the correct information about replacement filters and membrane, change, service, parts for global, Universal 4 stage reverse osmosis under the sink drinking water systems, witch, what compatible replacement water filters should be used?

How much does it cost, and how often should you change the filters in a CTA reverse osmosis system, first of all, you have to understand that the main stage in this system is the reverse osmosis membrane and all of the other filters are just serving, and providing protection to the membrane if the pre-filters failed to do the work because of its low quality as an example, that means your RO membrane will never give you the quality of water you expect, here is some information will help you to understand how your RO system is working reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water. In reverse osmosis, an applied pressure is used to overcome osmotic pressure, a colligative property, that is driven by chemical potential differences of the solvent, a thermodynamic parameter. Reverse osmosis can remove many types of dissolved and suspended species from water, including bacteria, and is used in both industrial processes and potable water production. The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side. To be "selective", this membrane should not allow large molecules or ions through the pores(holes), but should allow smaller components of the solution (such as solvent molecules) to pass freely. Very quality, organic cellulose fits all 5 stages under the sink (Tri-Filters) Flexcon fro drinking water systems reverse osmosis systems compatible Replacement Water Filters include 3-4 filters 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 the Original Organic RO membranes can last as long as 5 years. stage 1-Sediment filter is the first filter installed in Tri-Filter Drinking Water Systems Reverse Osmosis System Compatible Replacement water filters system. The main function of a sediment filter is to remove large and fine particles from 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.Lifetime: Replace every year, depending on the water Stage 3 -reverse osmosis membrane 25-35 GPD NSF Certified Thin Film TFC Membrane is the main component of Aquasky rot-4 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. membrane has The micron rating of a thin film less than 1/10000th of a Micronwhich is 620,000 Times Finer Than A Human Hair 2,500 Times smaller than bacteria 20 Times smaller than any virusProduct Features:50 TO 80 Gallons Per Day (15.8 -19.6 Liters per Hour) Capacity99% Stabilized Salt Rejection (Minimum Rejection 97%)NSF/ANSI Standard 58 listedOperating 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 NTUMaximum feed water SDI (15min): 5Chlorine to seelerance: 0Feed water pH range: 2-11Minimum brine flow to permeate flow ratio: 4:1 Stage 4 is inline carbon filter. 6"

Tri-Filter - Flexcon fro-122 CTA Drinking Water Systems Reverse Osmosis

  • Tri-Filter Drinking Water Systems Reverse Osmosis System Compatible Replacement Water Filters, Original Organic Set Of 5 Replacement Filters Cartridges be used with 5 Stage Under Sink Reverse Osmosis Water Systems - Reverse Osmosis Replacement Filters Cartridges -Original Organic - Aquasky ROT-14 & Aquasky ROT-6 Reverse Osmosis Replacement Filters Cartridges for PA-E Reverse Osmosis Filters .

  • 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.


bottom of page