Temp could be but I keep mine at a constant 76 and all seems well.My del spends 75% of her time buried in the sand. Ahahaha.
Ah man now you guys got me thinking about activity level:
Do you all think there is a correlation with temperature and activity level?
What about having things in all levels of the tank for them to swim through? If there’s less stuff in the tank, do they get bored?
Do high nitrates affect activity level?