HELLO ! IM NEW GUY WHO TRY TO SETUP A SALTWATER FISH TANK, I LEARN FROM THE GUIDE BOOK WHICH HELPING ME A LOT,FROM THE BEGINNING EVERYTHING OK.... THEREAFTER ABOUT 2WEEKS TIME I PUT THE FISH INSIDE MY 120LIYRE(24.5GALLON)TANK THE NIGHTMARE COME ALREADY,I CURRENTLY PUT 2 CLOWNFISH(PURCULA),1...