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Old 12-19-2013, 07:53 PM   #1
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Using tap water...

Can I use tap water to start/cycle my tank then use RO water for top off and water changes?
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Old 12-19-2013, 08:15 PM   #2
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That's a pretty good question....it depends how good your tap water is. It should be ok for startup . I would still add some sea chem prime and other water conditioners though.

To be completely honest, I think if you use RO from the get go, you will encounter less problems.
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Old 12-19-2013, 08:37 PM   #3
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If you can afford to use RO or RODI, that is the ideal. No concerns about what might be in the water or long term problems. If you can not use either, tap water is probably not as terrible as some might claim. I have used tap, and know several others that have, in both reef and FOWLRs in the past with no noticeable problems. I just filled my 240g with treated tap water. I plan to top off with RO (the tank came with an RO unit)...I just need to hook it up at some point.
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Old 12-19-2013, 08:43 PM   #4
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The Todd what are your tap water parameters where you live (tds)?
Here I. Toronto, ontario there around
165
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Old 12-19-2013, 08:59 PM   #5
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Quote:
Originally Posted by TheTodd View Post
If you can afford to use RO or RODI, that is the ideal. No concerns about what might be in the water or long term problems. If you can not use either, tap water is probably not as terrible as some might claim. I have used tap, and know several others that have, in both reef and FOWLRs in the past with no noticeable problems. I just filled my 240g with treated tap water. I plan to top off with RO (the tank came with an RO unit)...I just need to hook it up at some point.
.

Nice.. Do you know any additives to treat the tap water? And if you use tap water to start your tank and use RO water to top off and use it for water changes it will eventually be all RO water in the tank right?
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Old 12-19-2013, 09:19 PM   #6
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I started my tank up with tap and regretted it. I switched to ro when I started having nasty algae blooms
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Old 12-19-2013, 09:48 PM   #7
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I started my tank up with tap and regretted it. I switched to ro when I started having nasty algae blooms
Where you doing water changes with RO water?
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Old 12-19-2013, 09:48 PM   #8
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The Todd what are your tap water parameters where you live (tds)? Here I. Toronto, ontario there around 165
I could not remember, so just checked... Click image for larger version

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I use Prime to treat my tap water.
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Old 12-19-2013, 11:25 PM   #9
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Ok thanks Todd, I have had my tank for a few years but had a serious crash over a year ago and lost all my stock, once it seemed one fish would drop soon after I would loose another till they were all gone with in a week! Read somewhere it takes time for heavy metals in tap water to really negatively effect a salt water aquarium?
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Old 12-19-2013, 11:26 PM   #10
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Btw I had only used tap water prior to the tank crashing
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