Aquafit / aqua aerobics...Benefits?

Well done you!! Keep it up. Aqua Aerobics was recommended to me when I had a problem with my hip and has certainly helped. To tone up you probably need to use some weights, but do this under supervision to prevent injury. I find Step cles are great for toning. In time yoy might reach a plateau weight wise, but don't let that put you off. Best of luck.