I have been trying to cycle my aquarium for a few months now but it eventually fails. Usually, it begins converting a little ammonia to nitrites and then the nitrites dissapears and the ammonia stops falling. I have ruled out lack of bio media (I have 250 ml of matrix which is good for 50 gallons according to seachem in a media bag). Around 3-4 days ago, one of my family members turned off the filter for the whole NIGHT because it was "too loud" but they blare their tv loud enough for me to get startled by it while I am in my room upstairs on the other side of the house. This stopped the cycling process and I have not seen any traces of nitrites or ammonia going down. As far as I am aware, the process should have started up again but no luck. I think There might be a little bit of the test kit chemicals in the water since I notice the water is very slightly tinged blue or some other un natural color before I add in the drops.