TAP or RO/DI for Water changes?...

  • We are currently upgrading MFK. thanks! -neo
Doesn't RO/DI take out trace minerals? I know I bought some RO/DI water from my lfs once (it was really just for the 5 gallon bucket.. but apparently the 5$ I spent came with water included) and they said to add trace minerals to it.
 
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