Purple up causing problems?

[seashells]

I have seen some comments on reef central. Wheather purple up actually caused a problem or it was something else I can't say. I have never tried it.

Doug

[saltaddict]

I have been using purple up for a couple months now. I have not had any problems with it. I use it to raise my calcium levels and I use a kalk drip to maintain calcium/alk. In my opinion it has hepled coraline growth in my tank.