RO3 AKVA LINE is a complete, 3-stage reverse osmosis filter for aquarium applications, ready for installation. The set includes the AQUAFILTER 75 GPD membrane and pre-filters that protect the membrane and improve water quality. The system removes up to 98% of contaminants, helps reduce conductivity and pH, and effectively softens water. Performance up to 280 l/day (at 6 bar and25°C).
RO3 WATER FILTER AQUARIUM OSMOSIS AQUAFILTER 75 is a complete, 3-stage reverse osmosis system for aquarium applications, ready to install and equipped with an AQUAFILTER 75 GPD membrane. This osmosis filter effectively supports water treatment in aquariums, removes up to 98% of contaminants, helps reduce conductivity and pH, and softens water. The kit performance reaches up to 280 l/day at 6 bar and 25°C.

RO3 AKVA LINE is a ready-to-install water filter based on reverse osmosis technology, intended primarily for all types of aquariums. The water filtration system has been configured to combine effective pre-filtration with the operation of an osmosis membrane, which is responsible for a very high level of contaminant separation.
The device removes up to 98% of all water contaminants, including mechanical impurities, dissolved compounds and microorganisms. It is a solution for people who want water with better parameters for aquarium use and are looking for a complete, practical and easy-to-start kit.
Each device comes with an installation manual, and the filter itself is already prepared for installation.

The system is designed to improve water quality using reverse osmosis, one of the most advanced water purification methods. It is a solution valued by aquarists for its predictable parameters and the ability to prepare water suitable for further adjustment to the specific requirements of the tank.

Proven, efficient, high-quality branded osmosis membranes deliver very good filtration results and have a long service life.
Original pre-filters clean the water before the membrane, protect it and extend its service life.
A specially selected flow restrictor supports proper operation of the kit.
The set includes a Polish user and installation manual.
The filter is ready for installation and supplied as a pre-assembled kit.
The whole set is packed in an elegant, aesthetically pleasing box.
The RO3 reverse osmosis filter has been designed with aquarium applications in mind. It allows you to prepare water with parameters desired by many freshwater aquarium users, and after expansion it can also be part of more advanced systems.
Lowering water conductivity – this is an important parameter for aquarists. The kit is intended for freshwater aquaristics; for marine aquaristics, expansion of the system with a DEMI module is recommended.
Lowering pH – in most cases, the reduction is by 1–2 points.
Softening water – the osmosis membrane effectively removes calcium and magnesium compounds from the water, reducing total water hardness to zero or close to zero dH.
The effect of lowering pH and hardness depends on the parameters of the filtered water. Performance of up to 280 l/day is achieved at a pressure of 6 bar and water temperature of 25°C.

The system operates in three stages, thanks to which the osmosis membrane is protected by pre-filtration and the entire purification process is effective and stable.
In-line cartridge made of polypropylene foam. It is responsible for filtering sand, silt, rust particles and other solid contaminants from drinking water, effectively protecting the subsequent elements of the system. The cartridge should be replaced at most every 6 months.

The in-line carbon cartridge removes contaminants such as chlorine, chlorine compounds and organic impurities from the water. This stage supports membrane protection and improves the operating conditions of the entire system. The cartridge should be replaced at most every 6 months.

The osmosis membrane made on FILMTEC materials. It is an assembly of semipermeable thin-film membranes. In combination with nonwoven polypropylene and activated carbon filters, it makes it possible to obtain truly clean water. The osmosis membrane removes up to 99% of all compounds dissolved in water, as well as bacteria and viruses. Its service life is approximately 5–6 years.
To ensure the reverse osmosis system maintains high filtration efficiency, it is necessary to follow the replacement schedule for pre-filters and monitor the operating conditions of the device. Regular maintenance helps maintain good performance of the osmosis membrane and stable parameters of the treated water.

WPL2 cartridge: replace at most every 6 months.
WWL2 cartridge: replace at most every 6 months.
AQUAFILTER 75 membrane: service life about 5–6 years.
Operating pressure range: from 2.5 bar to 6 bar.
Operating temperature: from 2 to 42°C.
The ratio of clean to reject water is from 1:2 to 1:8, depending on water pressure and temperature; on average it is 1:4. This parameter is typical for systems based on an osmosis membrane and changes with operating conditions.
The set includes everything needed to start the system in the standard installation configuration.
Complete, ready-to-install RO3 filter with restrictor
AQUAFILTER 75 osmosis membrane
Mounting brackets for attaching the filter in a cabinet or on a wall
Drain connection in the form of a clamp
5 m hose
Polish installation manual
Water connection of choice: 3/8”, 1/2”, 3/4” or shower connection. After purchase, please specify the chosen version. 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 mixer serves as the valve and no additional valve is needed.

3/8” connection
1/2” connection
3/4” connection (washing machine/dishwasher)
1/2” connection (for shower)
If no connection is selected, the standard 1/2” version is shipped.

| System type | 3-stage reverse osmosis system for aquaristics |
|---|---|
| Model | RO3 AKVA LINE |
| Membrane | AQUAFILTER 75 GPD |
| System contaminant removal efficiency | up to 98% of all water contaminants: mechanical, dissolved compounds and microorganisms |
| Osmosis membrane efficiency | up to 99% of dissolved compounds, bacteria and viruses |
| Maximum output | up to 280 l/day* |
| Hourly output | about 11 l/h |
| Weight | approx. 1 kg |
| Minimum / maximum operating pressure | 2.5 bar – 6 bar |
| Operating temperature | 2–42°C |
| Ratio of clean to reject water | 1:2 – 1:8 depending on water pressure and temperature, average 1:4 |
| Membrane service life | approx. 5–6 years |
| WPL2 cartridge replacement | at most every 6 months |
| WWL2 cartridge replacement | at most every 6 months |
| Nominal output conditions | * at 6 bar pressure and 25°C water temperature |
| up to 98% of all water contaminants | mechanical, dissolved compounds and microorganisms |
Choose a set or individual cartridges. Replacement intervals depend on the cartridge and operating conditions.
It is a 3-stage reverse osmosis filter intended mainly for aquarium applications and for all types of aquariums. It allows you to prepare water with lower conductivity, lower pH and significantly reduced hardness.
Yes. The filter is prepared for installation, pre-assembled and supplied as a complete set. The package also includes a Polish installation manual.
The set is equipped with an AQUAFILTER 75 GPD osmosis membrane made on FILMTEC materials. It is responsible for the final purification stage and removes up to 99% of dissolved compounds, as well as bacteria and viruses.
The WPL2 and WWL2 pre-filters should be replaced at most every 6 months. The AQUAFILTER 75 membrane service life is approximately 5–6 years.
Maximum output is up to 280 l/day, which corresponds to about 11 l/h. This value applies under operating conditions at 6 bar pressure and 25°C water temperature.
The basic configuration of the kit is intended for freshwater aquaristics. For marine applications, the system can be expanded with a DEMI module.
There are four versions to choose from: 3/8”, 1/2”, 3/4” (washing machine/dishwasher) and 1/2” for shower. If no choice is indicated after purchase, the standard 1/2” connection is shipped.
The set includes a ready-to-install RO3 filter with restrictor, AQUAFILTER 75 membrane, mounting brackets, drain connection in the form of a clamp, 5 m hose, Polish installation manual and the selected water connection.
The ratio of clean to reject water is from 1:2 to 1:8, depending on water pressure and temperature. On average it is about 1:4.
RO3 AKVA LINE is a complete, 3-stage reverse osmosis filter for aquarium applications, ready for installation. The set includes the AQUAFILTER 75 GPD membrane and pre-filters that protect the membrane and improve water quality. The system removes up to 98% of contaminants, helps reduce conductivity and pH, and effectively softens water. Performance up to 280 l/day (at 6 bar and25°C).