Crazy Swimming After a Water Change

[AquaGirl]

I observed that my fish go crazy after doing a water change. They will start to dart towards the sponge filter and then ride the bubbles from the filter to the top then dive back down again.

The first time I saw this behavior I thought I had forgot to add conditioner. :roll: When I checked I had added the conditioner. I use the same exact water temperature and perimeters that is in the tank. The water is added slowly. No CO2 or chemicals are used. The PH is 7.4, 0 ammonia, 0 nitrites, 0 nitrates. No copper or other abnormal readings.

No one looks stressed or pale and all are eating well. It seems like a water change really excites them?????

The water perimeters are very good and I am doing a 20% change two times per week, sometimes more if my TDS reading is higher than 100ppm.

Has anyone observed this in their tanks?

[Katch]

Yeah mine go nuts when i do WCs too. I guess the cooler more highly oxygenated water triggers energetic behaviour which in turn leads to spawning. This is why WCs are a spawning trigger for many fish.

[BallAquatics]

I’ve never really noticed any of my smaller Danios doing this. The larger species often get into the flow of incoming water and act like they are trying to swim up stream. :lol:

Dennis

[AquaGirl]

Thank you both for the replies. I had a fear that I was doing something wrong even though the fish always look fine after the water changes.

It’s funny to watch them do this, they almost look like they are surfing.

Still waiting to see eggs. :roll:

[Author]

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