ZeRO Nano 4 - RO/DI system



ZeRO Nano4 RO/DI system is a high quality 4 stages RO/DI Systems that can produce ultra clean water from chlorinated tap water supply. ZeRO Nano4 include 1 stage of rust & sediment cartridge, 1 stage of carbon cartridge, and follow by a 200GPD TFC (Thin Film Composite) membranes that remove 90- 99% of heavy metals, contaminants and impurities. The final stage of the ZeRO Nano4 come with a refillable ion-exchange resin cartridge that can produce ultra-pure water, with 0 ppm TDS reading. The purified water is ready for salts mix to produce impurities-free sea water or use as top-up water for aquarium due to evaporation.

Highly recommended for Planted, Shrimps and Marine/Reef aquarists.

Filtration Stages

Stage 1: 5 micron Rust & Sediment Filter, effective in removing dirt, rust and solid particles.

Stage 2: Granular Activated Carbon Filter, remove free chlorine, odour, organic contaminants, pesticides and chemicals that contributed to taste and odour. 

Stage 3: ZeRO TFC Membranes are made in USA. High rejection TFC type membrane with the capacity of producing 200 gallons per day. Removes water contaminants: lead, cooper, barium, chromium, mercury, sodium, cadmium, fluoride, nitrite, nitrate, and selenium.

Stage 4:Refillabe deionization filter, takes the small percentage of contaminants that the membrane could not remove and produce ultra-pure water with 0ppm TDS reading.


-Type: Compact RO with Deionization (DI) filters

-Water production : 200 Gallons (757 Liter) per Day

-Pressure gauge: No

-Minimum Operation pressure: 50 psi