What's a "little high"?
You didn't offer much information, so any reply would be vague.
What's the value? How old is the pond? What's in it? Do you have an algae bloom? If so, is it filamentous or suspended? Do you have runoff issues? How many fish? How often do you feed them? Do you have marginal plants, water lilies? Do you get runoff into the pond? What's your filtration system? What's your geographical location?