The AquaticLife RO Buddie 50 gallons per day 4-stage reverse osmosis (RO) and de-ionization (DI) system features unbelievable affordability and functionality, all in a very compact design. Designed to provide a reliable source of economical filtered water for aquarium use, all systems use Thin-Film Composite (TFC) Membrane RO cartridges in conjunction with Carbon and Sediment cartridges to effectively and efficiently remove harmful substances such as heavy metal ions, dissolved solids (TDS), Chlorine and particulate matter from municipal tap water.
This 4-stage system includes the improved DI Color Changing Mixed Bed Resin Cartridge with MBD-30-NG Nuclear Grade resin. Both RO Buddie 3-Stage systems can be easily upgraded to a 4-Stage RO/DI system by adding the De-ionization (DI) Color Changing Mixed Bed Resin Cartridge. The Cation and Anion resins (H+ and OH-) in the DI cartridge media remove most of the remaining total dissolved solids (TDS) from membrane-filtered water, and produce purified water with an average conductivity value of ~0.1µS/cm. The DI Cartridge is refillable and has a clear housing so you know at a glance when the media needs to be replaced. The new MBD-30 resin changes color from blue to amber when the media is exhausted. Each DI Cartridge includes two clips that allow the cartridge to attach to the front of the membrane housing.