RO vs DI?

[TrevDizzle]

A couple of quick questions here. How important is it too have a RO/DI unit, as opposed to just having a RO unit? Which unit has a better purification capability or are they about the same? I know that it's best to have both units working in unisom, but being on a small budget, which unit is preferred?

--Trev

 

[WeeNe858]

RO/Di is really flat water it has no added minerals or trace elements in it

RO has more of the elements that you would really need , it is also cheaper to run..

IMO RO is better

 

[TrevDizzle]

Ok, thats what I thought. A RO unit alone was what I was originally leaning towards. Thanks for the quck reply!


--Trev

 

[fsn77]

RO/DI purifies more than just RO. The DI part gets the added ions that can pass through the RO membrane, such as some of the nutrients that you don't want building up in your sw tank. If you want to look at cost, the DI stage is relatively inexpensive considering what it does and the potential problems it can help avoid. Any good salt mix is going to provide plenty of minerals and trace elements, plus they'll be balanced.

 

[mikelush78]

I agree with FSN RO/DI is better... Removes more potential problems from the water and over time they add up. Whe they add up then you have problems that cost more then a RO/DI.

 

[TrevDizzle]

I guess I should invest the extra money into a RO/DI Unit then. Thanks for the help guys!

--Trev

 

[fsn77]

If you're still shopping around, check with thefilterguys.biz -- they're reef aquarists themselves, actually use their own products, and can help you customize a unit to your needs.

 

[Fishieness]

RO/Di is really flat water it has no added minerals or trace elements in it

RO has more of the elements that you would really need , it is also cheaper to run..

IMO RO is better

why would RO be better? RO only takes out about 80% (of course, with a few variables... but on average) while DI takes out over 97%. RO is better for freshwater if you dont treat RO/DI. but RO/DI is by far superior.

 

[5xevy]

why would RO be better? RO only takes out about 80% (of course, with a few variables... but on average) while DI takes out over 97%. RO is better for freshwater if you dont treat RO/DI. but RO/DI is by far superior.

What would you treat RO/DI water with? RO does not need treating? I'm getting a system within the next 2 weeks and am wondering these same questions.

 

[Fishieness]

in many freshwater tanks, people have to add some additives because the water is too pure. In freshwater, RO doesnt need to be treated because it is good enough for the tank, but it isnt TOO pure. of course, you dont need to treat any saltwater for anything because you are obviously adding salt.