7 Stage PRO RO/DI Aquarium Reef Reverse Osmosis Deionization System | 75/100/150 GPD Membrane


7 Stage Pro RO/DI Systems – Perfect for almost any water condition, but if you have contaminants that use excessive amounts of DI resin, the 7 Stage RODI system is the ideal choice. It uses cation and anion single bed resins that give you added control and cost savings over traditionally used mixed bed resins. Most water supplies tend to exhaust either the positively or negatively charged resin more quickly than the other, and by separating the standard mixed bed resin into single beds, you are no longer throwing away good deionization resin.

7 Stages of Filtration

Stage 1 – 5 Micron Sediment Filter NSF Certified

Stage 2 – 5 Micron Universal Carbon Block NSF Certified

Stage 3 – 5 Micron Universal Carbon Block NSF Certified

Stage 4 – Reverse Osmosis Membrane NSF Certified

Stage 5 – Cation Deionization Resin

Stage 6 – Anion Deionization Resin

Stage 7 – Mixed Bed Deionization DI Resin

SKU: SP67 Categories: ,


If you have hard-to-remove contaminants, your city uses chloramines, or you just are not sure what is in your water the 7 Stage Pro RO/DI system is the perfect solution to make ultra-pure water for your saltwater aquarium. The Triple DI Saver system uses separate cation and anion beds of resin and is backed up by a mixed bed of resin for final polishing. Using the resin in a single bed form allows for greater efficiency, letting you filter more water for less money.

7 Stage Pro RO/DI Systems are designed to produce ultra-pure water while being very efficient with deionization resin consumption. If your water is treated which chlorine, chloramines, or from a well the Aqua True Blue 7 Stage will be able to clean your water down to 0 TDS after the triple DI system. Many water supplies have impurities like phosphates, ammonia, and CO2 that can use up deionization resin quickly and by using single bed cation and anion resins that are backed up by a mixed bed resin, you will only need to replace the DI cartridge that has been exhausted.

Every Aqua True Blue RODI system can be installed within minutes with the easy to use push-connect fittings that allow you to make leak-free connections. Aqua True Blue RO/DI systems only use the latest filters and components in Reverse Osmosis technology. We have designed our RO/DI units especially for reef tanks, but they can produce perfect water for other types of saltwater and freshwater aquariums too. If you have a well, or you are connected to city water we offer a variety of RO/DI systems that will fit your aquarium’s needs.

7 Stage Pro RO/DI Features:

Super efficient with DI consumption
Includes All resin
Produce 0 TDS water
Minimal wastewater
Includes Inline Ball Valve
6 Ft Each of 1/4″ Blue, Red and Black Tubing
Pre-installed NSF Certified Filters

Additional information

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Aqua True Blue

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75 GPD, 100 GPD, 150 GPD


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