Ok we have a 72 gallon bow front corner tank. we have a yellow tang blue hippoe tang a dragon goby and a puffer valentini. we had 2 nemos but we lost one last week and one today but we can't find it anywhere. Ok i have noticed the water real cloudy a week or 2 ago so we rinsed the filter out and the water is nice and clear now. well this has been going on for a while now but i have noticed like little bubbles on there fins. i didnt think much of it. we have had a problem with the yellow tang and the blue hippo. i bought the blue hippo about a week before christmas. well the yellow tang showed him whos boss for a couple days then they were cool then a couple weeks later back to fighting. I came home from work and noticed that the blue one was covered with bubbles must be ick but in the morning they were gone. well he is still alive but really weak. i noticed the dragon his one eye is messed up my puffer has bubbles on fins. the only one that seems fine is the yellow tang. guy from work said i could put some copper in the tank. now i dont have anywhere to put the fish other than where they are now and it is a fish only tank so will treating them hurt them. I kindof figure i am out a couple hundred dollars in fish probably cause this disease is know to kill them. and also my daughter seen these tiny little bugs on the glass would that be the ick parasites?