Quality of units
Everyone worries about the quality of the various RO/DI systems. It is all about the filters. The rest is little more than canisters and tubing. I use a system with a .1 micron sediment filter, charcoal filter (block), RO membrane and DI filter. I do buy my di resin from BRS.
If your water has a lot of sediment, you might want a 5 stage with a .5 micron sediment filter and a .1 micron sediment filter.
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Gary
180 gallon, 40 gallon sump, 3 250 W MH + 4 80W ATI T5's, MTC MVX 36 Skimmer, Apex controller Aquamaxx T-3 CaRx
Current Tank Info: A 2 Barred Rabbitfish, Red Head Salon, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 3 PJ and 1 Banggai Cardinalfish , Swallowtail, Bellus and Coral Beauty Angels
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