Ok Waldo is in the 5 gal Hex which is right beside the Oscar tank. Waldo will swim around the tank very, very fast in circles and then go to the side by the Oscars and flare like crazy and he runs up and down the tank. He does this most of the day till I put something between the tanks so he can't see the Oscars. His fins are so messed up from all the fast swimming. Is there anything I can put in the tank to heal his fins? I have stress coat which I use on a regular basis with water changes and additions. I put some extra in there yesterday hopeing to thelp the little monster. His top fin on his back is down to what looks like a string and his back fins are splitting. He was fine till he decided to fight with the neighbors a few days ago and this is non stop now till I either turn out his light or block his view. Needless to say one of the Oscars goes right back at him from the Oscar tank. Moving either tank is not an option and he use to enjoy the company. I can block his view if I need to so he can heal but I wasn't sure what if anything I could add to the water to help move along the healing process on his fins.