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Unread 04/28/2021, 03:43 AM   #1
Nano Chris
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Join Date: Apr 2006
Location: Baltimore, MD
Posts: 2,758
RO/DI Replacement

I have a ro/di unit (captive purity 75gpd) that I bought years ago from you guys. Recently got back into the hobby & bought the new cartridges and all. But I was wondering about those refillable DI cartridges. Is there anything special you gotta do beside fill them up with the resin? Iím trying to save $ also if I was wondering. With it being 75gpd, is it possible to upgrade the system so it could do more? If so what would I have to replace? The RO & flow restricter or not possible?

34 Gallon Red Sea Max 130! Setup
(Just got back into the hobby)

Current Tank Info: 34 Gallon RedSeaMax!
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Unread 05/03/2021, 11:33 PM   #2
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Join Date: May 2008
Posts: 12
RODI have a lot of waste by design. I have a 100GPD unit but would take forever to make water. Added another membrane and also an Aquatic Life booster to my unit. I can now make 5 gallons in about 25 minutes and waste about 1/3 the amount of water as before....

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