Is it possible to use too much chemi pure ina reef tank?

[Zoaelite]

Nothing to worry about if you have a fish only system, even in a reef you should be fine. It's an ion exchange resin with GFO, I don't think it binds trace elements like carbon does but I'm not sure about that.

[DanG]

I should have added that I'm doing this because I switched from RO to tap with prime.

Good to know that it's ok, thanks guys.