Update 5/16

Our fish has lived peacefully and, in my opinion, healthily even though the other fish in our tank died a few weeks ago. He spends his time underneath the filter and enjoys swimming through the rock in the middle of the tank and hiding behind it. We have had well performing tests and we have not been required to completely change the water. We had to add some more water from the sink because the water level had sunk to almost below the filter. Over the entire run of our aquarium, we have had to make very little changes and our tank has been better off without our interference.