I've done that with a slurry before and within 2 days it had done the same thing but I always keep mine a minimum of two weeks to be sure fermentation is done and give the yeast some time to clean things up and start to clear. I haven't used that particular yeast but I wouldn't remove it after 3 days. Its a honey mango, did you put actual honey in there or a honey like malt? If so, how much honey?