Filtered tap water VS RO water - The Planted Tank Forum
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post #1 of 7 (permalink) Old 07-03-2019, 05:27 PM Thread Starter
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Question Filtered tap water VS RO water

Is filtered water better than tap water?

Is filtered tap water close to RO water?
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post #2 of 7 (permalink) Old 07-03-2019, 06:59 PM
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Defined "Filtered"
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post #3 of 7 (permalink) Old 07-03-2019, 07:15 PM
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Unfortunately, the answer to your question is 'maybe'. It all depends on too many variables.
The big questions are what the tap water situation is to begin with, what kind of filtration is being used, and what you are using the water for.
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post #4 of 7 (permalink) Old 07-03-2019, 07:18 PM
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RO water is filtered. There are many, many different ways to filter water so it's an impossible question to answer without more information.

Nothing good happens fast in an ecosystem.
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post #5 of 7 (permalink) Old 07-03-2019, 09:14 PM Thread Starter
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Defined "Filtered"
Such as a Brita pitcher filter. PUR etc.

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Unfortunately, the answer to your question is 'maybe'. It all depends on too many variables.
The big questions are what the tap water situation is to begin with, what kind of filtration is being used, and what you are using the water for.
Bay Area California water
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post #6 of 7 (permalink) Old 07-03-2019, 09:29 PM
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Running water through a Brita would be better than straight tap in theory. I wouldn't expect it to be as low TDS as RO though. Are you trying to keep shrimp or something fragile?

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post #7 of 7 (permalink) Old 07-03-2019, 10:08 PM
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Brita/pur dont seem to make a significance in lowering tds from my tap of 200ish. I was a bit surprised about that. I easily measure over 100 on the filtered water. And with a new filter too! No, unless you have zerowater filters, it's a far cry from RO if you're looking for that 0 tds.


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