Reverse osmosis systems for saltwater aquarium

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Questions / Réponses

What is a reverse osmosis unit?
   

The reverse osmosis system allows you to treat your tap water to make it pure, in particular to eliminate all traces of nitrates. Osmosis water is therefore water purified of all its chemical substances or other bacteria harmful to the proper functioning of your aquarium, thanks to a filtration system which must be renewed in order to maintain its effectiveness.

When to change the osmosis membrane?
   

The reverse osmosis membrane must be changed when it is no longer effective, generally after a few years. You can check this with a TDS meter.

How to install an aquarium reverse osmosis unit?
   

A reverse osmosis unit should be placed towards a cold water inlet/tap and placed vertically with the outlet facing down to facilitate wastewater disposal. If you want to place your reverse osmosis unit in a specific location, you will need to purchase specific adapters. The membrane must always be in the water.

What is reverse osmosis water?
   

Osmosis water is purified water, without impurities, drug residues, pesticides or others, obtained using the reverse osmosis system.

Why use a reverse osmosis system in an aquarium?

Elimination of pollutants: nitrates, phosphates, chlorine, heavy metals

Using a reverse osmosis system means saying goodbye to the unwanted elements that ruin the balance of an aquarium. Nitrates, phosphates, chlorine, heavy metals ... all of these things are left at the door. Reverse osmosis water is pure, crystal clear, and, above all, perfect for preventing algae, diseases, and the problems associated with unstable tap water. It's a healthy foundation for a tank in top shape.

Full control of parameters (KH, GH, pH)

With a reverse osmosis system, you regain control. No more unexpected variations in KH or GH. Reverse osmosis water has a GH and KH close to zero , which then allows it to be adjusted to the map according to the biotope. Ideal for those who want to play aquatic alchemists and create tailor-made water.

Ideal for reef aquariums, aquascaping, shrimp, discus

If you keep corals, demanding plants, sensitive shrimp, or fragile discus , reverse osmosis water is essential. It provides you with a neutral, adjustable base, free of any pollutants. A must-have for all avid aquarists.

How does an aquarium reverse osmosis system work?

The principle of reverse osmosis

Reverse osmosis is simple and ingenious: tap water is pressurized and passes through an ultra-thin membrane that only allows water molecules to pass through. The result: ultra-pure water on one side, and waste rejected on the other. It's the most effective filtration system available today.

Filtration stages: pre-filters, membrane, post-filtration

A good reverse osmosis system works in several stages: pre-filtration (sediment + carbon), osmotic membrane, then post-filtration . Some models go up to 5 stages with anti-nitrate or anti-silicate cartridges. Each stage has its role to guarantee impeccable water quality.

Differences between single, double or triple cartridge reverse osmosis systems

A 3-stage reverse osmosis system is sufficient for most standard aquariums. For more demanding requirements (reef, SPS corals, breeding), a 5-stage reverse osmosis system will be more suitable, as it offers even finer and more targeted filtration. Also choose according to the quality of your tap water.

What are the advantages of reverse osmosis in aquariums?

Reverse osmosis gives you total freedom over your water parameters . You eliminate the unexpected issues related to tap water and can adapt the water to each biotope, without stress. It's also economical in the long run, especially if you change more than 40L of reverse osmosis water per week. And with a booster pump, you improve performance while saving water. In short, an investment that quickly pays for itself and is essential for serious aquarists.

FAQ

What is reverse osmosis water?

This water is purified by reverse osmosis, free of minerals and pollutants. KH and GH are zero, as are nitrates and nitrites. A perfect base for aquariums.

Which reverse osmosis system for a freshwater aquarium?

A 50 to 100 GPD model is more than enough for small and medium-sized aquariums. Adjust the system based on the size of your tank and the frequency of water changes. A 3-stage system may be sufficient, except in cases of specific needs.

Which reverse osmosis system for a marine aquarium?

For a reef tank, aim for at least 100 GPD with 4 or 5 filtration stages. And if possible, a booster pump to optimize performance.

How to connect an aquarium reverse osmosis system?

It connects directly to a faucet (like a washing machine faucet), with one inlet for water, one outlet for clean water, and one for waste water. Follow the manufacturer's instructions carefully to avoid leaks.

How to choose the right reverse osmosis system?

Consider your requirement in liters/day (GPD), your network pressure (if low, add a booster pump), and the quality of your water. If it's very hard or loaded with nitrates, opt directly for a 5-step system.