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Old 10-02-2006, 09:26 PM   #1
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RO or DI system Pros and Cons?

I am thinking about getting a Ro system because my water is fairly hard thus my PH stays around 7.5/ the majority of the fish i keep have a target PH of around 6.5- 7.

1 what all is required when using a RO system
2. what is a good brand to get
3. will i need to add anything back into the water.
4. is there another option besides RO or DI
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Old 10-02-2006, 10:23 PM   #2
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1 what all is required when using a RO system
Just a water supply and the filter itself.Mine is hooked up under the sink.
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2. what is a good brand to get
I'll edit in a link to the one I have..110g/day...cost $124 shipped.My total dissolved solids are 65ppm out of the tap.TDS after the filter are 0.it is both RO and DI though
Quote:
3. will i need to add anything back into the water.
Not for the fish...may have to dose ferts for plants though,I'm not quite sure though.
Quote:
4. is there another option besides RO or DI
You could buy distilled....but even as cheap as it is, your own unit wil pay for itself over time...especially if its a large tank.

Edit:Heres the link (a link to the store can be found near the bottom):
http://cgi.ebay.com/AQUARIUM-2-110GP...QQcmdZViewItem


Whoops I missed the greater question here which is about ph range,even it wasn't asked.Your ph is fine.In your situation I would not spend money on a ro/di unit at all.A stable ph as much more important then an ideal one.As long as it doen't swing wildly between changes I would do nothing at all.Your fish will be fine.
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Old 10-04-2006, 07:46 PM   #3
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3. will i need to add anything back into the water.
Try mixing 50/50 with your tap water and then checking the "H's"-pH, GH, KH. If you go 100% RO/DI you will need to add either Kent RO Right or Seachem Equilibrium for GH and Baking soda for KH.

What are your current GH and KH?
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