Adding minerals back with an R/O unit?

[Artemis JT]

I now have no choice but to use R/O water in my tanks, because my tap water (well water) has 35 mg/l of nitrAte. I have a coralife superflow II and just ordered new replacement canisters. My question- what kind of "packets" or whatever do I need to replace minerals and stuff back into the tank? And where can I get one?? Thanks.

[Toddrtrex]

You don't need to add anything to the RO/DI water -- just use it as it (( of course adding salt when doing a water change. ))

[Artemis JT]

Originally Posted by Toddrtrex

You don't need to add anything to the RO/DI water -- just use it as it (( of course adding salt when doing a water change. ))

I've read multiple times that long term use of R/O unit with no minerals kills fish, because they cant maintain a correct metabolism and so they made add-in packets?? Or am I completely off.

[Toddrtrex]

Originally Posted by Artemis JT

I've read multiple times that long term use of R/O unit with no minerals kills fish, because they cant maintain a correct metabolism and so they made add-in packets?? Or am I completely off.

To be blunt -- completely off. For the most part, everything needed will be added to the water when you make up your salt water (( use straight RO/DI for top offs )).

Of course if you get into corals, you might have to add Cal, Alk, and Mag, but that is a different subject.

I have been using RO/DI water for at least 10 years -- without adding anything to it -- and everything is going great.

[whorulz1147]

Yes, the minerals are in the salt mix. No need to add anything else. What you have heard may apply to freshwater tanks, but don't quote me on that one...