I would keep using it for a while, if that is not a problem and see if visa. improves. When visa. starts getting better then start cutting back on pump . See this link and Overton's post wrt his hatchery ponds having heavy bloom and need for emergency surface aeration.

http://www.pondboss.com/ubb/ultimatebb.php?ubb=get_topic;f=11;t=000121;p=2#000015