<a href=showthread.php?s=&postid=7242510#post7242510 target=_blank>Originally posted</a> by XeniaMania
Actually, Xenias do need calcium, just not as much as SPS corals. All corals utilize Calcium to some extent. There's much debate as to whether they do eat or not. Scientific studies do show that they have poor means to eat which rules it out in their book, however, whenever I feed my tank plankton, 8 out of 9 xenias show no reaction, but my Goldback species do seem to show a feeding response. When I feed Black Powder, my Giant Xenias show a feeding response. My preferences are to keep light, pH on the high side, and everything else as close to NSW as possible. I've even recently purchased the Iwasaki Aqua2 for my 20g tank, should be interesting to see the results.