I got some sun coral about a week ago and I am new to the hobby. Only been in it for about a year. At first they were frustrating me but after about a week all the polyps are now opening and eating great! I thought they were gonna be too hard for me at first and some said not to even bother, but now that they open at the same time every night and eating they are actually easy to take care of. I have 2 new poylps already sprouting. I couldn't be happier with them and glad that I stuck it out!