so all of a sudden my tank got REALLY clouded and my ammonia spiked through the roof...like the highest it can go on a test kit...so i did an emergency 30% PWC and bought some USED filter media from an established tank from a local lfs and stuck it in there...it is still pretty cloudy but the fish look much more calm (it has been around 8 hours since the insertion of the media) how much longer am i looking at for my levels to stabilize?? and once i do hit 0 ppm of ammonia and nitrite can i take the ugly mesh bag out of the tank??