Hi everyone. So I started my tank 3 weeks ago and started off with Dr Tim’s one and only. 5 days later I added 2 clown fish, then a week later 2 hermit crabs. I’ve been testing waters every day to keep an eye. My ammonia has gone up to about 1.5 at the most. I dose Prime and Stability every morning to keep ammonia non toxic. Why is my ammonia not going down? I did a 20% water change Monday but still no change. What can I do to get ammonia and nitrites down to 0?