So I am about 16 days into the red sea reefer marine starter kit. I did a test using red sea test kits on day 14 and got 0 ammonia and did the test twice to confirm this. Before picking up any livestock for my tank I did a test the next morning and the day after. Both looked closer to 0.2 but I have added nothing to the tank. Have I messed up somewhere and is there something I need to do ?