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Old 10-18-2013, 11:06 PM   #1
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RO bottled water?

Do I need DI water? Can I I fill up a 5 gallon jug from the machine? If I mix salt with it can i store it in the container for a extended period of time? (One or two weeks in between water changes)
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Old 10-19-2013, 12:25 AM   #2
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what kind of tank is this water for? FOWLR or reef?
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Old 10-19-2013, 12:53 AM   #3
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well for a while it will be FOWLR..eventually reef.
it's RO water though
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Old 10-19-2013, 12:55 AM   #4
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Quote:
Originally Posted by Evo8 View Post
well for a while it will be FOWLR..eventually reef.
it's RO water though
RO is good enough for a FOWLR, but eventually you will need RO/DI for reef
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Old 10-19-2013, 01:56 AM   #5
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If you're planning on going reef later on down the road, I'd recommend getting RODI. RO membranes filter approximately 95%-98% of contaminants from the water, and DI resin removes the remainder. The problem with this is you don't know what is in that 2% to 5% that makes it through the membrane, and many of those nasties can slowly accumulate in the pores of your live rock, eventually creating a high enough concentration that can be detrimental to your system.

To your second question, yes, you can pre-mix saltwater & store it, but it will need to be brought up to temp prior to use. If you're mixing small quantities, you're better off just mixing it the night before with a small heater & powerhead so it's ready the following day.
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