Simple, every chalice I've allowed in my reef tank melts to it's skeleton. I've followed the "basic/ideal" rules regarding placement however, nothing seems to matter. I'm just pondering, am I overlooking something that maybe I haven't considered? My parms are right in line. The tank temp is has zero swing. I'm also diligent with testing and maintenance. So what gives? I've melted not one, not two, but THREE my Miami chalices and that sucks!