Four days ago I started cycling my 40 gallon tank with 75lbs. of uncured live rock. My ammonia spiked to about 8ppm but have not done a water change to lower it since I wasnt sure, after reading posts here, it seems to prolong the cycling time. Today I added a product that contains live
nitrifying bacteria which said it would help lower my ammonia and nitrite levels naturally and help seed my
biological filter. Have I done anything wrong here or is normal to get this spike in just 4 days? I just wanted to get started with a strong foundation for my biological filter but I feel I messed up already on this.

Any feed back would trully help. Thanks a lot guys.