I just started my tank added fish and now the water is cloudy?

i just started and added fish to my 30 gal tank i am running a aqua clear 150 with the filter,carbon, and bio bag. the water is cloudy, i added accu-clear, and stress coat, by API. when will the water clear up, how often should i change the water it is stocked with 10 feeder goldfish 4 tetras one died and they ate it, and 2 double tailed goldfish about 2 quarters long if lined up. when should i add the snails? i had a tank before cuz all my fish kept dying and spent a lot on this tank supplies fish and accecories any help is appreciated.