RO3 Aqua Vita aquarium filter PENTAIR 100gpd
3-stage reverse osmosis system with PENTAIR 100GPD membrane.
Specifications
- Application
- Aquarium
- Compatibility
- RO3 system
- DI stage
- No
- Maximum working pressure
- 6 bar
- Maximum working temperature
- 42 °C
- Filter media
- Polypropylene
View full specifications
- Membrane capacity
- 100 GPD
- Minimum working pressure
- 2.5 bar
- Minimum working temperature
- 2 °C
- Product type
- Aquarium RO / RO-DI system
- Pump
- No
- Number of filtration stages
- 3 etap
- Tank
- No
Description
RO3 Aqua Vita aquarium filter PENTAIR 100gpd is a 3-stage reverse osmosis system for preparing very low-hardness water for aquariums. This osmosis filter uses a PENTAIR 100 GPD membrane, pre-filters, and convenient quick-connect fittings, ensuring effective water treatment, simple installation, and easier servicing. It is suitable for both freshwater and marine aquariums, as well as anywhere clean water with a reduced content of dissolved contaminants is needed.

RO filter for aquariums with PENTAIR 100 GPD membrane
RO3 Aqua Vita is an original aquarium filter with a complete set of connections, designed to improve water quality using the reverse osmosis method. It is one of the most advanced water purification methods, capable of removing up to 98% of mechanical impurities, dissolved compounds, and microorganisms.
The system is used to obtain pure water for marine and freshwater aquariums. It makes it easier to prepare water with zero general hardness, low pH, and an almost zero content of nitrogen compounds.
The water produced by this reverse osmosis filter can also be used for other applications, such as cosmetic, laboratory, or steam iron use.

Why choose the RO3 Aqua Vita system
- Proven, efficient, high-quality branded osmosis membranes delivering very good filtration results and featuring a long service life.
- Original pre-filters clean the water before it reaches the membrane, protecting the osmosis membrane and extending its lifespan.
- A specially selected flow restrictor and Polish installation and operating instructions.
- The filters are pre-assembled and ready for installation.
- Elegant, aesthetically pleasing packaging.
Quick-connect fittings for easier installation and servicing
The system uses modern quick-connect fittings on the inline filters. This solution allows the water filter to be assembled quickly and then serviced conveniently on your own. An additional advantage is the mechanical lock of the sealing mechanism, which increases operational safety and helps maintain leak-tight connections.
Basic aquarium applications
- Reducing water conductivity – an important parameter for aquarists. The set is intended for freshwater aquariums, while for marine aquariums it is worth expanding the system with a DEMI module.
- Lowering pH – in most cases, the reduction is by 1-2 points.
- Water softening – the osmosis membrane effectively removes calcium and magnesium compounds from the water, reducing the general hardness of the water to zero or close to zero dH, depending on the parameters of the filtered water.
Filtration stages

1. WPL2
An inline cartridge made of polypropylene foam. It is responsible for removing sand, silt, rust particles, and other solid contaminants from the water. This is the first stage of protection for the entire water filtration system and an important safeguard for the subsequent stages. The cartridge should be replaced at least every 6 months.
2. WWL2
The inline carbon cartridge removes contaminants such as chlorine, chlorine compounds, and organic impurities from the water. As a result, it improves the operating conditions of the osmosis membrane and supports the effectiveness of the entire filtration process. The cartridge should be replaced at least every 6 months.
3. PENTAIR 100
The osmosis membrane is the key component of the set. It is an assembly of semi-permeable thin-film membranes working together with polypropylene nonwoven and activated carbon filters. This combination makes it possible to obtain truly clean and healthy water. The osmosis membrane removes up to 99% of dissolved compounds in water, as well as bacteria and viruses. The estimated membrane lifespan is approximately 3-5 years.

Important operating information: the WPL2 and WWL2 pre-filters should be replaced at least every 6 months. The lifespan of the PENTAIR 100 membrane is estimated at approximately 3-5 years. Actual operating parameters, filtration efficiency, the level of hardness and pH reduction, and the ratio of purified to rejected water depend on the quality of the feed water, pressure, and temperature.
Connection options
- 3/8” connection (approx. 15 mm)
- 1/2" connection (approx. 20 mm)
- 3/4" connection (washing machine/dishwasher), (approx. 25 mm)
- 1/2" connection (for shower), (approx. 20 mm)
- If no connection is selected, we will add the standard 1/2"
The water connection can be selected from: 3/8”, 1/2”, 3/4”, or a shower connection. Information about the selected variant should be provided after purchase. If no connection is specified, the standard 1/2" version is shipped. If the shower connection is selected, the set does not include a brass valve, because the shower faucet serves as the valve and no additional element is needed.
Set contents
- Complete, ready-to-install RO3 filter with restrictor
- PENTAIR 100 GPD osmosis membrane
- Brackets for mounting the filter in a cabinet or on a wall
- Drain connection (clamp)
- 5 m of tubing
- Polish installation instructions
- Water connection to choose from: 3/8”, 1/2”, 3/4”, or a shower connection
* At a pressure of 6 bar and water temperature of 25°C.

Technical specifications
| System type | 3-stage reverse osmosis system |
|---|---|
| Membrane model | PENTAIR 100 GPD |
| Maximum capacity | up to 370 l/day* |
| Weight | approx. 2 kg |
| Minimum / maximum operating pressure | 2.5 bar - 6 bar |
| Operating temperature | 2-42 °C |
| Ratio of purified to rejected water | 1:2 - 1:6 depending on water pressure and temperature, average 1:3 |
| WPL2 cartridge replacement | at least every 6 months |
| WWL2 cartridge replacement | at least every 6 months |
| Estimated membrane lifespan | approx. 3 - 5 years |
Choose a set or individual cartridges. Replacement intervals depend on the cartridge and operating conditions.
Cartridge sets 4
Individual cartridges 2
Membranes 1
Additional accessories 2
Questions
What is the RO3 Aqua Vita PENTAIR 100 GPD filter used for?
It is an aquarium filter that uses reverse osmosis to prepare water with very low hardness. It is used primarily in freshwater and marine aquariums, where control of water parameters is important.
Is the RO3 Aqua Vita aquarium filter PENTAIR 100gpd suitable for freshwater and marine aquariums?
Yes. The system is used in both freshwater and marine aquariums. For marine applications, it is worth considering expanding the set with a DEMI module.
What contaminants does the reverse osmosis filter remove?
The system removes up to 98% of mechanical impurities, dissolved compounds, and microorganisms. The osmosis membrane itself removes up to 99% of dissolved compounds, as well as bacteria and viruses.
How often should the cartridges and membrane be replaced?
The WPL2 and WWL2 pre-filters should be replaced at least every 6 months. The estimated lifespan of the PENTAIR 100 GPD membrane is approximately 3-5 years.
Which connection can be selected for the set?
You can choose from 3/8”, 1/2”, 3/4”, and 1/2” shower connections. If no variant is specified after purchase, the 1/2" connection is added by default.
Is the filter difficult to install?
No. The filter is prepared for installation, and the quick-connect fittings simplify connection and later servicing. The set also includes Polish installation instructions.
What is the maximum system capacity?
The maximum capacity is up to 370 liters per day at a pressure of 6 bar and a water temperature of 25°C.
What is the ratio of purified to rejected water?
The ratio of purified to rejected water ranges from 1:2 to 1:6, depending on water pressure and temperature, with an average of about 1:3.
Can water from this system also be used outside aquarium applications?
Yes. Water obtained from the system can also be used for cosmetic purposes, laboratory use, and steam irons.
Manuals and downloads
Polecam lepszy od wersji za 115zł
Membrana pentair 100 robi różnicę ;)
dobry
Polecam stosuję w swoim akwarium długi czas
recenzja
Łatwy montaż oraz szybka dostawa,dam znać jak się sprawuje
zadowolony z zakupu
wydajny, polecam
Zadowolony
Super
Dobrze wykonane
Widać, że produkt jest solidny
Solidny
Filtr jest solidnie zbudowany i wytrzymały.
Super filtr
Świetna jakość, moje rybki są zachwycone!
Filtruje dobrze
Idealny i trwały.Komplet przyłączeń, prosta konstrukcja, doskonałe parametry przefiltrowanej wody. Polecam
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