Hi there first post here so be patient with me . I have recently added two acropora frags (a blue tenuis and a strawberry shortcake and they haven't done to well. They seem to have lost tissue from the base and the shorcake has gone brown. I'm after some pointers as to what I could be doing wrong. Montipora grows fine I have seriatopora and stylophora as well as a green slimer and sarmentosa as well as LPS, all growing great. I will be as detailed as I can with my set up below