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Old 02-05-2015, 04:40 AM   #11
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I purchased the 4 stage rodi universal unit plus a faucet kit for drinking water for less than 300 from BRS. They told me that 4 stage works for 90% of people and I got 10 % off. I can't wait to start using it.

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Old 02-05-2015, 08:40 AM   #12
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This is the one I have. I have since turned it into a 150gpd system, but it's basically the same unit-
BRS 4 Stage Value Plus RO/DI System - 75GPD - Bulk Reef Supply
I have no complaints.
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Old 02-08-2015, 06:18 PM   #13
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What does the 4 stage, 5 stage and 6 stage even do? Are Aquatic life units good? They are pretty cheap.

The coarlife ones my LFS sells are kind of spendy.

Do you always need a pump?
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Old 02-08-2015, 06:42 PM   #14
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You need a pump if your water pressure is under about 70psi.

The stages filter the water. The more stages with the right filters and order of filters the less quickly your DI resin is consumed and the longer it will last between changes. Also if your local water supply contains chloramines you will need a specific filter for that.
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Old 02-08-2015, 07:15 PM   #15
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You need a pump if your water pressure is under about 70psi.

The stages filter the water. The more stages with the right filters and order of filters the less quickly your DI resin is consumed and the longer it will last between changes. Also if your local water supply contains chloramines you will need a specific filter for that.
I'm going to go out on a limb here and say mine does.

Does it madder if hard or soft water goes in?
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Old 02-08-2015, 07:43 PM   #16
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You should be able to lookup your local water and see if it contains chloramines. A lot of municipalities don't use it.

The harder the water the more frequently you'll have to change your filters.
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Old 02-08-2015, 09:35 PM   #17
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You should be able to lookup your local water and see if it contains chloramines. A lot of municipalities don't use it.

The harder the water the more frequently you'll have to change your filters.
I mean like softener salt "soft" water, would that be better and make stuff last longer? Usually I use water from the upstairs sink because I figured fish need the minerals and stuff, but if its being RO/Di's to pure H20 I could use the water from the downstairs bathroom.
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Old 02-08-2015, 09:42 PM   #18
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It isn't going to make much of a difference for your RODI system. Whether the system is pulling out exchanged Ca ions from the water softener, or pulling our the original ions, either way you will end up with TDS of 0 in a properly functioning system, and both will consume DI resin at about the same rate.
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