RO/DI water

midnightmadman

midnightmadman

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Dec 21, 2005
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I recently got out of saltwater and have a RO/DI unit.
I was wondering if it is worth using for my freshwater tanks? or should I just sell it?
I rememebr reading that RO water was bad for freshwater somewhere?? is that true at all?
 
I'd use it sense you already have it.

Abraham
 
Well the water out of your unit is basically stripped of anything - nutrients and minerals. I dont think your fish would appreciate that at all - and neither would your plants if you go with live ones.
So you'd have to find a way to add all the trace minerals back into the water.

Of course i cant answer the Q if you should sell it or not. Why not keep it "just incase" ? Or if your tap water parameters are really extreme (extremely hard water/ extreme pH/ nitrates in it etc) you could use some tap and some RO/DI water to mix it to the desired parameters.
 
Well. I was thinking about just using the "waste" water... which doesnt go through the membrane.
So it isnt completely stripped.
 
All you have to do is buy RO right. I adds the trace elements back into the water. I would stay with the RO unit. It is easier to maintain better water quality with it.
 
msouth468 said:
All you have to do is buy RO right. I adds the trace elements back into the water. I would stay with the RO unit. It is easier to maintain better water quality with it.
Click to expand...

What do you mean by "All you have to do is buy RO right"
???
 
Buy something like this

http://www.aquariumguys.com/roright250gm.html

RO water needs certain trace elements put back into it for use with fresh water. You didn't need to use "RO right" when you had a SW aquarium because the salt mixture added to it supplied all the neccessary elements. Using RO water for FW aquariums is a better choice because you can easily adjust your water parameters to fit what you want them to be.
 
midnightmadman said:
How about I bypass the RO membane and just run it through the sediment filters and the resin?
Click to expand...

Just connect the out line from the sediment filter into the input line from the DI.
 
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