I use this method of feeding. Troublesome but worth it. Now got more polyps and has grown twice in size.... I mashed up prawns, fish, squid, silver fish etc and throw into the bowl. Throw in some formula one pellets as well into the opened polyps.
http://www.sgreefclub.com/forum/index.php?...sun+coral&st=15
If coral starts to turn black that means part of it is dying. Pls feed it as soon as possible. Use cyclopeeze to entice the fella to open up.