Hi, I have an urgent problem I hope you guys can help me with. I moved appartments and moved my 20G long tank. I decided to do a deep clean since I had a snail problem, so I boiled my rocks to kill the eggs. I transferred 50% of the original water and kept my filter sponge in current tank water. I noticed a foggy tank the next morning, and did some tests and noticed 1 ppm of nitrite and quite a bit of nitrate. No, to very little ammonia. I figured I must have taken too long to transfer my filter media and my bacteria died. So I've been doing daily water changes. I noticed I still have the same nitrite, lots of nitrate, and now .5-1 ppm of ammonia! The changes were making things worse. Turns out my tap water has .5 ppm of ammonia in it. I was confused as to how I have ammonia, nitrite, and nitrate... I thought that when I have that much nitrate, my tank is cycled and I shouldn't be having ammonia or nitrite readings anymore..... So do you guys think that by adding the new tap water, with all that ammonia, I'm overwhelming my biological filter? Putting so much ammonia in there that the nitrite builds up? Then when I do water changes to address the nitrite, I am adding more ammonia and this vicious cycle just gets worse? BTW, I'll be doing water changes with good water going forward... But I am wondering if I have a cycled tank still? Thanks.