i had just bought a large hammer coral on nov 25 and in the past 3 days it started to turn slimy and start to disinicrate on one end. i looked through some of my books and it looks like brown jelly infection. what i then did is cut the thing in half and discarded the bad part. that was 2 days ago and it looks alive but i dont think it will make it. i probably did everything wrong but my question is, is brown jelly something that will spread through my tank? so far in the past 1 1/2 years of my setup i lost 1 colt coral(dont know why) 1 yellow tank(dont know why) and now the hammer. this is what i have thats doing great even multiplying- 1 leather coral 1 bubble coral lots of shrooms that are spreading 1 brain coral 1 cup coral even my digitada and poritis are growing fast. here are some pics.