DI..is it really that important?

markw

markw

Member
I am looking up RO/DI units and I was thinking..exactly how important is the DI part? What does it actually do and would it be something to make sure to have in an RO fixture?
Mark
 
ryancw01

ryancw01

Member
It is not important for drinking water, but very important for saltwater tanks. The DI removes sodium, calcium, iron, copper and anions such as chloride and bromide. Might as well shell out the bucks now for an all-in-one unit because you will want to upgrade later.
 
pezenfuego

pezenfuego

Active Member
If I may, I'd like to make an addition. Hydrogen ions are what makes water have a basic or acid pH value. By removing ions from the water, the DI helps to neutralize the pH so that when you add your salt to the water, it will find the right balance.
Is it absolutely necessary for a saltwater aquarium? Well...no. You can use RO water as long as you are confident that your tap source isn't absolutely atrocious. Is it worth the investment? The answer to that question is, absolutely. It is not very expensive and it will kick your water into 0 tds.
 
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