I brewed a kit 2 days ago from Midwest called Noble Trappist Ale. I didn't use a starter (for the White Labs vial) and never saw any airlock activity for approximately 36 hours. I opened the lid at noon today and there were no visible signs any type of fermentation had occurred. It appeared that all of the yeast and sunk to the bottom. I had an extra packet of Safale US-05. I sprinkled this on top and when I came home 4 hours later the airlock was going crazy. Should my beer turn out OK or not? Thanks