In my 5, 10 gallon breeding tanks i am having a problem with ammonia on 2/20 i tested for ammonia and it tested between 2-3. i did 25% water change and cleaned the gravel and didn't feed that night. I fed again the evening of 2/22. When went down and checked the ammonia on 2/23 it had went up to between 4-5. so i did a 25% water change and went to my LFS . They recommended Amquel. So I came home and put it in my tanks. on the evening of 2/23 i tested again it had went up to between 6-7. I don't understand why it is going up??? my ph is between 7.0 and 7.4 in all the tanks , the tanks are set at 74 degrees.. What can i do to get the ammonia down? I feed ever other day frozen brine. i am switching to flake food once a day to see if that helps. but i am really just winging it. What should I do??