[TRe]

IMO dont use purple up... like lorna said its just a calcium supplement.... i use b-ionic since not only does it buffer your calcium but also alk, and trace elements.... if u do decide to start dosing anything first you wanna make sure u test to make sure you even need it! so if u wanna use purple up first invest in a calcium testkit and if u decide to go the b-ionic route you want cal/alk tests ...... with that said if u wanna see pink/purple start to spread make sure your cal/alk is in check and like i said get a few pieces to seed and within 6 months every single rock will be purple