@AlexT This should be easier to read (hopefully):
Day 1: Ammonia: 0.50 Nitrite: 0.25 Nitrate: 15
Day 4: Ammonia: 1 Nitrite: 2 Nitrate: 10
Day 7: Ammonia: <0.25 Nitrite: 1 Nitrate: 20 (50% water change)
Day 13: Ammonia: 0 Nitrite: 2 Nitrate: 10 (50% water change)
Day 16: Ammonia: <0.25 Nitrite: 0.25 Nitrate: 7
Day 19: Ammonia: 0 Nitrite: 0 Nitrate: 5 (added some ammonia solution and bottled bacteria)
Day 20: Ammonia: 2 Nitrite: 1 Nitrate: 20
Day 23: Ammonia: 0 Nitrite: 0 Nitrate: 30
Day 24: Ammonia: 0 Nitrite: 0 Nitrate: 10 (added 8ml ammonia solution)
Day 27: Ammonia: 0 Nitrite: 5 Nitrate: 25
I only used the tests from every few days unless there was a water change or ammonia added. The unit is PPM
