+30 2310 383 588
Thessaloniki Store, Greece
Corporate Headquarters

+30 210 27 55 681
Athens Store, Greece

+30 210 411 6497
Piraeus Store, Greece

+30 2410 53 90 83
Larisa Store, Greece

Opening hours: Monday – Friday 09:00–21:00, Saturday 09:00–17:00 (GMT+2 / EET)

4 stages Reverse Osmosis system for aquariums - Primato USA4GB-RO-AQ

In stock
USA4GB-RO-AQ
190.00
(Including tax)

Primato USA4GB-RO-AQ provides crystall clear water for your aquarium. It reduces limescale, heavy metals, carcinogens, arsenic, nitrates, lead, VOC's etc. 

It comes with a 10 year warranty! 

+
  • Shipping Cost

USA4GB-RO-AQ system

  • HEAVY DUTY housings.
  • Produces crystall clear water for your aquarium.
  • Completely removes all harmful substances from water. 
  • Includes everything you need to install it quickly. It also includes a float valve that stops the system when the aquarium is full of water.


made in USA Primato ULTRA CTO and Primato ULTRA PB cartridges are made in the USA.

Filtration stages:

primato ultra cto

In the first stage the water is filtered through the Primato ULTRA CTO activated carbon filter (5 microns).

  • Reduces chlorine, chloroform, unpleasant taste, odor, suspended particles, sand, rust, mud, soils, total organic carbon, industrial organic compounds (tetrachloroethylene, trichloroethylene), soluble organic compounds, dissolved organic compounds, manganese, industrial waste and many other substances harmful to the body.
  • Made in the USA.
  • Greatly improves water's taste and odour.
  • Needs replacement every year. 
  • Permeability: 5 μm
primato ultra pb

In the second stage, the water is filtered through the Primato ULTRA PB activated carbon filter (0.5 microns).

  • Effectively reduces chlorine, unpleasant taste and odor, heavy metals, chloroform, pesticides, organic chemicals, volatile organic compounds (VOCs), industrial residues, toxic, turbidity, cysts, Cryptosporidium, Giard Toxoplasma, bacteria, microorganisms, asbestos fibers, particulate matter, mud, rust, soil and various other harmful substances.
  • Also removes: alachlor, endrin, simazine, atrazine, ethylbenzene, styrene, benzene, ethylene dibromide (EDB), 1,1,2,2-tetrachloroethane, carbofuran, haloacetonitriles, tetrachloroethylene, carbon tetrachloride, bromochloroacetene bromochloroacetene, trombone 2,4,5-TP (silvex), chloropicrin, dichloroacetonitrile, tribromoacetic acid, 2,4-D, trichloroacetonitrile, 1,2,4-trichlorobenzene, dibromochloropropane (DBCP), haloketones, 1,1,1-trichloroethane, o -dichlorobenzene, 1,1-dichloro-2-propanone, 1,1,2-trichloroethane, p-dichlorobenzene, 1,1,1-trichloro-2-propanone, trichloroethylene, 1,2-dichloroethane, heptachlor, trihalomethanes (TTHM ), 1,1-dichloroethylene, heptachlor epoxide, bromodichloromethane, cis-1,2-dichloroethylene, hexachlorobutadiene, bromoform, trans-1,2-dichloroethylene, hexachlorocyclopentadiene, chlorodibromomethane, 1,2-dichloropropane, lindane, , 3-dichloropropylene, methoxychlor, xylenes, dinoseb, pentachlorophenol
  • VOC's (Volatile Organic Compounds) contain chemicals that come from both humans and nature. We usually find them in wells or pipelines. Some VOCs are pesticides, herbicides and insecticides that enter groundwater after application by humans. Some other volatile organic compounds enter groundwater from industrial use or from sewers. PRIMATO ULTRA PB also reduces trihalomethanes which are by-products of water chlorination.
  • Made in the USA from 100% coconut carbon.
  • Lead reduction 2500 gals @ 0.75GPM (9500 L)
  • VOC's reduction 500gals@1GPM (1900 L)
  • Chlorine reduction >8000 gal @ 1 GPM (30000 L)
  • Improves water's taste and odour.
  • Need replacement at least once per year.
ro membrane

In the third stage is the membrane of reverse osmosis. The membrane has a permeability of 0.0001 microns and a production of 50GPD (Galons Per Day), ie 189 liters per day. Limescale, nitrates, chromium, arsenic, poisons, germs and bacteria are filtered here.

DI filter

In the fourth and last stage is the deionization filter. This filter consists of cationic and anionic ion exchange resin. The mixture of these two is called mixed bed resin.

Cationic resin (positively charged)

  • Removes positively charged ions such as calcium ions, magnesium ions, etc.
  • It softens and completely desalts the water.
  • Removes barium and radio

Anionic resin (negatively charged)

  • Removes negatively charged ions such as nitrates, perchlorates, arsenic, total organic carbon, uranium, etc.
  • It binds ionic halogens as an antimicrobial disinfectant.
  • Removes barium and radio

When cationic and anionic resins are mixed together, the result is water with zero conductivity (0 TDS) in water. Minerals in water are exchanged with hydrogen cations (H +) and hydroxide anions (OH–) by the resin beads to form very pure water (H2O).

Easy installation

μεμβράνη ώσμωσης

The colored tubes help you to quickly and easily install the system.

The white tube connects to the cold water supply.

The black tube connect to the drain kit.

The blue tube connects to the float valve which is mounted on the aquarium glass.

All fittings come with small blue fuses. To remove a tube from the fitting, you must first remove the blue fuse and then pull the tube out while pushing the socket from the fitting inwards.

In the original packaging, we have put small pieces of colored tubes to make it easier for you. So, we fixed a small black tube at the drain outlet, a small piece of white tube at the water supply and a small blue tube at the outlet of the clean water.

φλοτερ ενυδρείου





The float valve is placed on the glass of the aquarium.

Once the water level in the aquarium drops, the float valve drops down and the system starts refilling the aquarium with water. Once the aquarium is filled with water, the float valve goes up and the system stops working.

Custom made RO's

We can assemble a reverse osmosis system according to the needs of your aquarium. Contact us and tell us your needs (eg conductivity, hardness, connection method, etc.). We can make all kinds of systems for you. We'll be happy to assist you!

"Who will install my filter?"

We have our own technicians in Athens, Thessaloniki, Piraeus, and Larisa. In these areas, we offer free installation for all filters over €100; for other products, our fees are always friendly. For other regions, please contact us and we’ll find the best solution for you.
Our technicians visit your location by appointment, at a day and time that suits you. During the visit, they measure your water pressure, show you how to change the filters, provide information about the device and replacement parts, and answer any questions you may have.

If you choose to install the filter yourself: Every device comes with detailed instructions, and we have made installation videos for all our filters, available on each product page. If you need help, just call us and an experienced technician will guide you step-by-step over the phone.

"Where are your stores and headquarters located?"

Headquarters: 34 Patriarchou Grigoriou E, PC 54248, Thessaloniki, +30 2310 383 588
Thessaloniki Store: 34 Patriarchou Grigoriou E, PC 54248, Thessaloniki, +30 2310 383 588
Athens Store (Nea Ionia): 216 Irakleiou Avenue, PC 14231, Nea Ionia, Attica, +30 210 27 55 681
Piraeus Store: 69 Grigoriou Lambraki, PC 18532, Piraeus, +30 210 411 6497
Larisa Store: 12 Megalou Alexandrou, PC 41222, Larisa, +30 2410 53 90 83

Opening hours: Monday to Friday 09:00–21:00 | Saturday 09:00–17:00

"How do I choose the right replacement filter for my area?"

The replacement filters included in your package are suitable for most areas of Greece, but your device is also compatible with many other filter types. On each product page, you’ll find all available replacement filters with photos, summaries, and links for more details. If you’re not sure which filter is best for your area, simply contact us—we’ll be happy to help!

"Should I choose a countertop or under-sink filter?"

This depends on your available kitchen space and your needs. Countertop filters can be connected by yourself in seconds, but they take up space on the counter. Under-sink filters save counter space but usually require installation by a technician or plumber.

"I don’t know if I need a single, double, or triple filter."

If your problem is just taste or odor, a single filter is enough. If you also have sediment, you need a double filter—first stage for sediment, second for carbon. If you have limescale, sediment, and bad taste, a triple filter is recommended. For wells, islands, or very challenging water, we suggest a reverse osmosis filter. If you’re not sure, just contact us!

"How will I remember when to change my filter?"

Leave it to us! We’ll call you when it’s time to change your filter.

"If a part of my filter breaks, do you have spare parts?"

We stock all spare parts for every device we sell.

"What does the warranty cover?"

Under-sink filters: The warranty covers the plastic housings (provided water pressure does not exceed device limits). Faucets and metal parts are covered for 2 years; stainless steel bases for 10 years.
Countertop filters: The warranty covers plastic parts; the faucet and diverter are covered for 2 years.
Tap filters: All plastic parts are covered for 10 years; diverter for 2 years.
Shipping: If your product arrives damaged, we’ll replace it at no cost.
Warranty conditions: Please use and maintain your filter as instructed, and change cartridges on time, using cartridges from Primato or an authorized retailer.

"I lost the wrench and can’t open my device to change the filter."

We supply all spare parts, including wrenches—just let us know what you need.

"I can’t or don’t want to order online. Is there another way?"

Absolutely! Just call us or visit one of our stores—we’re happy to assist you.

"I want to order online with my card, but I’m not comfortable with computers."

No problem! Call us while you’re at your computer and we’ll guide you step by step.

"How long does courier delivery take?"

Usually, delivery is the next or the following business day.

"Can I use a different filter cartridge in the future?"

Yes. If your water quality or needs change, we’ll help you choose the right cartridge.

"Will I always be able to find filters?"

Primato has operated successfully since 2008, constantly expanding our network and improving services to serve you throughout Greece.

"How much does shipping cost?"

Below the "Add to Cart" button you’ll find a link for "SHIPPING AND PAYMENT COST" with full details. For orders over €50, shipping is free. For smaller orders, the shipping cost is €2.5. You can choose from various courier companies.

Payment methods: We accept all cards (credit, debit, prepaid), cash on delivery, bank transfer, PayPal, and in-store payment. Choose what’s best for you during checkout.

Returns & Exchanges: If you change your mind, you can return any product within 14 days as long as it’s in its original condition and packaging. Your money will be refunded promptly. For more information, contact us or see our full return policy on our website.

"Why choose us?"

We are a Greek company with warehouses and stores in Athens, Thessaloniki, Piraeus, Larisa, and our headquarters in Thessaloniki. We’re always here for you, before and after your purchase, answering all your questions. We guarantee high-quality products, fast service, up to 10 years’ warranty, and full spare parts availability. We are official distributors of major companies and also manufacture filters in Sindos, Thessaloniki, certified to ISO 9001:2015.
Our experience, expertise, ongoing staff training, and excellent customer service are just a few reasons to trust us. We are always by your side, all year round, and every customer is unique to us.

For any questions we haven’t answered here, contact us at:
+30 2310 383 588 (Thessaloniki & Headquarters), +30 210 27 55 681 (Athens), +30 210 411 6497 (Piraeus), +30 2410 53 90 83 (Larisa).
We’ll be delighted to assist you!

Manufacturer:
Primato

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