Hi, so I started cycling my tank for about 2.5 weeks now. Every time I add Dr. Tim's ammonia chloride, the test kit shows the ammonia is over 8ppm. I followed the instruction of adding 4 drops per gallon the first time and then reduced it to 2 drops per gallon. I'm using the API freshwater test kit to check ammonia but I am using the saltwater color card. I checked and the reagents are not expired. I've been logging for 2.5 weeks now and I saw a reduction in ammonia until 0.25ppm and same with nitrite from 8ppm+ to 0 now so I decided to add 1ppm more ammonia but it suddenly shows 8ppm+ NH3. I wonder what I'm doing wrong.