Hello, I'm setting up my first RB Piranha tank and have a few questions. My tank size is 55 gallons. The water is in as of this Thursday. I have a Magnum 350 filter for up to a 100 gallon tank. Decorations and heater where washed off and installed as well. Yesterday I put in a dozen goldfish to start my cycling. What should I be looking for now or am I missing some steps? My local pet shop highly recommended for me to add "Stability" to get my tank moving, but I didn't want to add anything extra and wanted to cycle my tank naturally. Should I add the "Stability" or just let the goldfish run its course? Any advice would be much appreciated!