well to make a long story short, i added 2 clownfish and a blue tang to my tank. one of the clowns was down near the bottom of the tank and out came my lobster and grabbed the clownfish and killed him!! a sad day to say the least. the other clownfish seems to be surviving but has some visible marks on his body possibly from the lobster as well. the blue tang is quite large in size (the same fish as in finding nemo!!) and all it does is hide in the rocks and try and get under the very same rock where the lobster is. neither the clown or the tang are eating very well. what have i done wrong. i pulled out all my damsels and the cinnamon clown i had in previously because i wanted some different fish. my water checked out fine and i haven't had any problems thus far except for a bit of brown algae... what should i do??