When should my tank produce ammonia...

[marvinsae]

so i just started my tank about a week ago and i added the live sand on the first day. however i didnt have any rock yet. a few days later i was able to purchase some rock and i've put in about 40 lbs all together. i was wondering how long it would take to get the cycling process going? its been almost a week since i started. should i add a damsel or some raw cocktail shrimp?