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Old 08-21-2008, 06:49 PM   #1
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Question RO filtration

Hi,

It's been a while since I have been here. Lost one of my shubunkins recently (Probably due to a bacterial infection). It was sad for me. He was 2 years old.

I have a 56 gal FW tank using a Rena Filstar XP2 canister filter (which I love). I also use the Rena bio stars filtration in one of the baskets in the filter. Two shubunkins and one large mystery snail are the residents.

I have a question about RO systems, water, etc. I do PWC's (10-15%) weekly or q 10 days. I test my water and always have high nitrates. My critter shop guy said it's probably naturally occurring in the water and the only way of controlling is to use RO water. I don't know much about these systems. Does anyone have any suggestions as to which one to use (not too expensive, hopefully) or another way to help keep my nitrates down?

Thanks,

Kerry
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Old 08-21-2008, 07:05 PM   #2
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I don't think RO water will pull out nitrAtes (at least not all of it), it will pull out trace elements and nutrients that your fish need (so you will need to use additives to supplement the fish).
Have you tested your tap for nitrAtes?
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Good reading about:
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Old 08-21-2008, 07:12 PM   #3
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No, I haven't tested my tap water yet. If it is high in nitrates, do you have any suggestions as to how to correct? Other parameters are within normal limits.
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Old 08-21-2008, 07:17 PM   #4
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I would check your tap first. If that is the issue a DI unit (if you can buy them) should take out the nitrAtes.
If it is not your tap, we can further troubleshoot.
Here is an article on RO and DI:
http://www.aquariumadvice.com/articl...ics/Page1.html

Something like this:
http://www.drsfostersmith.com/produc...84&pcatid=4484
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Old 08-21-2008, 10:26 PM   #5
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Remember for FW you have to add the trace elements back in. I use (actually used; I quit using RO Ro/DI water on my FW and went back to bottled/filtered) Electro-Right. Unlike saltwater where the salt mix adds everything back in, for FW you need to add it.

If you don't you'll have very unhappy fish (maybe floaters too.. speaking from experience).
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