Victor-Falko;3982233; said:I think your problem is your light!
Light sensitivity is a common reason for unstable datnoids! I just dimmed my light to the point where they felt comfortable, then gradually raise the amount of light going into the tank! The process took about 2 weeks for me! After this they became consistently stable and shown an increase in activity!
At first mine seemed a little light sensative, but now they are fine. So i agree with needing to get comfortable,
Also you mentioned once water tempature droped... What is your tempature at normaly?