What are you using as an ammonia source (sounds like fish food?) and how long has the tank been running? Have you tested for nitrites yet?
Dr. Tim’s ammonium chloride? And you’ve been dosing Dr. Tim’s for 2 1/2 months? When is the last time you added it?I am actually using Dr Tim’s as an ammonia source, and the tank has been up for about 2 1/2 months. Some of the plant matter decaying has, I believe, led to the small 0.25 ammonia spike. Basically I’m just trying to figure out how much of the ammonia I should add when accounting for the pre existing ammonia in order to reach 2.0 ppm and not go over/under. My nitrites have stayed consistently at 0.