How can i tell if my aquarium is completly cycled if I dont have that master testing kit? My goldfish died of old age and my tank sat for a few weeks with nothing in it (i kept the filter going). I just put fish food in there about a week ago. How long should that take to cycle the tank? 75-76 degree, no inhabitants beside live plants, 60 gallon w/canister filter that was running for 1+ years with my goldfish. I transfered them from my old 40 gallon.