Remineralizing ro water

[plod]

For those who use RODI water in the UK, how do you remineralize your water for breeding discus?

Do you just add some waster water, or do you use something like tropic marine minerals or seachem discus trace?

Is 1 product better that the other?

[kev1310]

I just add back some of the RO waste water until I get a TDS of about 70-80ppm, no issues doing this for me, it at least been carbon filtered

[eros111]

Yes I do the same thing. For my breeding tanks I keep the TDS at around 50-60 and for general tanks about 90 - 100