Jakarta is the capital of Indonesia, and where most Indonesian corals are shipped out from. I hate to be the bearer of bad news, but your coral is very ill, and it's going to be that way for a long long time. If it survives at all. Please, if you ever purchase another elegance, please, please, please make sure it was collected in Australia. Part of the problem with these corals is that Indonesia has raped the collection sites and now the collectors are forced to dive to deeper depths to collect them. So, when you buy an Indonesian elegance, the natural environment gets raped a little more, you throw your money away, and another animal dies a meaningless death.
Please don't take what I said personally. I'm just trying to get the point across to people that may be reading this, that buying these corals is a very very very bad idea.
Your placement on the PVC is perfect. These guys are VERY sensitive to increases in light, so try to keep it somewhat shaded. It may begin producing excess mucus. If it does, it will be worse in the mornings. It will need to be remove as soon as possible. Simply waving your hand over the coral usually dislodges it. Then it can easily be removed from the tank with a small fish net.
HTH
EC