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Reverse Osmosis RO DI Aquarium Water Filter

i use the same RODI inqy uses.

the ones on ebay should be fine - I think that particular design - i read somewhere (someone far more wiser than me) that the 4th stage being horizontal like that - means it actually has a smaller volume/capacity. I dunno - I'm probably spreading bad internet lore...LOL.
 
I think that's a good deal on the ebay site. I used filter direct before (not via ebay). Had I known, I would've bought that RODI from them. I only use RO by my kitchen sink. The tank is nice touch. I like having 3-4 gallons available all the time.
 
Good filter, I have that same unit made by Water General. Produces 0 tds water after DI step and around 15 tds on RO side. I bought it used from fellow NJReefers club member for $80, have it for a month now.
 
Any bacteria traveling through your pipes will probably die after you subject it to reef salinity. It's definitely not needed. If it's a few bucks more, go for it but I wouldn't pay more than say $10 extra for it.
 
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