OK my partner and i just made the switch from fresh to saltwater and we are what you would call very "green". We cylced the water, addedd the live rock then two clowns at the same time as a coral. Afetr added a a very cute lil puffer and a flighty sail fin tang. Soon after we notice the coral was retracted and figured it may have been just the comotion from all the new fish but then he never came back out. I read up about the puffer and found out the might eat the coral. seperated him and planned on taking him back. only to find a day later the coral seems worse and the puffer still under arrest. Under closer inspection we noticed on one of the pieces of live rock ( next to the coral ) there was a white almost web like substence that had increased from the night before over the rock. I was worried that there may be something living in the live rock causing all this so i pulled it out of the tank. As soon as i did an awful smell was coming from the rock. and i mean to the point of dry reaching, so have left it out of the tank hoping to improve on the situtation.HAve also done partial water change and water treatments .Can anyone enlighten me or any advice on how to stop this from going further down hill? Please!!!