New to the forums with a Question. My florida gar is acting strange. He'll be swimming forward and suddenly curl his tail and kind of go backwards. Sometimes 3 to 4 times before moving forward again. Appears as something is irritating him. Water temp. is at 78. PH at 7.2. Nitrate and nitrite at 0. Hardness at somewhere between 0 and 25. He didnt do it much before. But more often as time goes on. His color appears good and he looks to be in good health. Any suggestions?