DeirdreHoyle
Aquarium Advice FINatic
My Kuhli loaches keep swimming up and down and back and fourth in my 25 gallon tank. I just did a water change before they started doing this. The temp is 80 and I have medium sized gravel on one side of the tank and smaller gravel on the other side. Plenty of hiding places and live plants. Water parameters are normal, 0 ammonia & nitrite, nitrate around 30, pH is 6.8. Is this normal? Some people say it means they're happy and some say it means they're stressed.