my live rock is leaking something..i hate to be crude but it looks alot like sperm... at first a few months ago i figured my startfish was letting it go, and about 2-4 weeks later a saw many baby starfish, so i figured my first thought was right. but today i saw it was actaully comming off of the rock! its milky white but very transparent and dissipates fairly quickly into the water. it doesnt seem to harm anything as my clown fish were swimming around and through it and didnt seem to mind. any ideas on what it dould be?