Hello, I'm hoping somebody might have some insights into what is happening with my fish. I have a 75g with 40 tiger barbs and they have always been the most outgoing, friendly and active fish. Today I noticed they are behaving as if they are frightened and just hiding behind the plants at substrate level. When occasionally I see a few swim out from the plants, they dart around near the substrate before hiding again. Their behaviour just seems frightened to me. I tried a sprinkle of food to see if they would eat (these barbs are greedy pigs always) and they were not as excited and quick to feed, but still came out to eat.
Nothing has changed in the room, and the tank temp is the same as always. No ammonia, nitrite or excess nitrate. The light and filter seems to be functioning normally.
The most recent change to the tank, was I started adding adding co2. This was over two weeks ago, and the barbs didn't seem to care at all. Is this some sort of weird delayed reaction?
I use a ph controller for the co2, so it's not a malfunction in the system unless the controller is now taking a false reading and injecting too much co2. That must be highly unlikely though? All of the co2 equipment was brand new, and I calibrated the controller properly.
Nothing has changed in the room, and the tank temp is the same as always. No ammonia, nitrite or excess nitrate. The light and filter seems to be functioning normally.
The most recent change to the tank, was I started adding adding co2. This was over two weeks ago, and the barbs didn't seem to care at all. Is this some sort of weird delayed reaction?
I use a ph controller for the co2, so it's not a malfunction in the system unless the controller is now taking a false reading and injecting too much co2. That must be highly unlikely though? All of the co2 equipment was brand new, and I calibrated the controller properly.