Save money and buy a Set of 4 replacement filters lowest price in the market, organic cellulose standard size for 4 stages Pentair GRO-50EN Green Reverse Osmosis System with Pentair High Recovery Membrane under sink reverse osmosis, pa-e RO 132 and Aquasky ROT-4 water systems, 99% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water.
 
All Reverse osmosis water systems - include 2 or 3 filters followed by 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 the Pentair Gro EN-36, 50, and 75 green Aquasky RO systems can last around 8 To 12 months between changes.
 
Only the original organic GRO Pentair Green RO membranes can last as long as five years.
 
stage1-
The sediment filter is the first filter installed in all 4-stage GRO Green Reverse Osmosis System with Pentair High Recovery Membrane Osmosis water filters system. The primary 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 microns.
Dimensions: ( 10") 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. The filter will fit any residential reverse osmosis unit that features standard 10" filter housing (please  look for the list of compatible systems)
 
Stage 2-
Reverse osmosis replacement Original organic activated carbon GAC filters are well-known for their highly efficient reduction of chlorine taste and odorTaste and odor 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: ( 10") 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. The filter will fit any standard-size universal residential reverse osmosis unit that features traditional 10" filter housing (please look for the list of compatible systems)
 
Stage 3-
Organic original Activated Carbon Block filters are made of fine coconut shell carbon to remove odors and tastes of many organic compounds, especially chlorine.
Because these filters are made of packed carbon (forming a cylinder block), they offer a much finer filtration of suspended particles and dirt.
Micron rating: 5 Micron.
Dimensions: ( 10") 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.
The filter will fit any standers size universal residential reverse osmosis unit that features standard 10" filter housing ( please look for the list of compatible systems )
 
Stage 4-
Original organic - Pentair GRO - 50EN, also known as the Pentair Green Reverse Osmosis, TLC Encapsulated membrane, and we are pretty pleased with its performance.
 
The high recovery membrane is the primary component of the reverse osmosis system, and it is NSF certified and made entirely of organic fine thin film flat sheet material. Thanks to this technology, harmful substances such as bacteria, pesticides, herbicides, and heavy metals are removed from tap water with a 99% reduction rate, ensuring that the water I drink is safe and clean.
 
On the other hand, If you're looking to improve your water system's efficiency, it's essential to consider the flow ratio of your RO system. the Older models typically operate at a 4:1 brine-to-permeate flow ratio, which can result in a lot of wasted water. However, newer high-efficiency methods, like the Pentair GRO EN-36, 50, or 75, achieve a much better 1:1 ratio, meaning you'll get more pure water for every gallon you use.
Additionally, it's essential to stay on top of regular maintenance tasks, like replacing pre-filters on time, to ensure that your membrane and overall system operate optimally.
 
This filter is wrapped and sealed and meets NSF Standards and Regulations. 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, and 20 Times smaller than any virus.
Product Features: 50 Gallons Per Day (15.8 -19.6 Liters per Hour) Capacity 99% stabilized salt rejection (minimum rejection 97%) NSF/ANSI Standard 58 listed O
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 Chlorinetolerance: 0 Feed water pH range: 2-1
Minimum brine flow to permeate flow ratio: 1:1
 
Please feel free to send us a photo of your water system at any time, either before or after placing an order. Based on the photo, we can confirm which filters would suit your system. Our goal is to make sure you have the correct filters.
Tech support email address info@aquaskyusa.com
Or to our tech support cellphone line at  (954)297-5093