I have been keeping fish for a while. I was always under the impression that an air pump was needed I always used one but now I am reading if u have good agitation from the filter its not really required. I have a 55 with 2 filters and an airpump. I also just put my 20 back up and have a hob
aqua clear 50. My airpump died for this tank and it has been running without the airpump for a week and fish seem fine. The filter provides good circulation so should I be ok without an airpump?