hi all just came back from a 5 dayer up north and a have a brown seaweed out break it is @ 1/2 of the back of tank . i heard a yellow tang will help. .it seams i have to take out @ 15 gal to clean it out. does any have any suggestions. sure would help .one thing i do not have a skimmer .but thats is not going to help with the seaweed ??????. thanks