RO water has only 95% of impurities taken out were as RO/DI water has 99% of impurities taken out. I myself have an RO/DI unit and love it!
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120 Gallon Reef With 2 overflows and 35 Gallon Sump. Mag 18 on the Return. Lit by Aqua Light Pro Deluxe. Super Reef Octopus 2000 Skimmer. 81 # LR
28 Gallon Top Down Display Mixed Reef. Radios Pro With TIR Lens Kit
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