Now don't laugh too hard as I try to make some observations here. I'm often up during the dark hours to get my husband off to work, so I get to see my kuhlis dancing just about every night. I've been noticing that they are always on the left side of the tank which also happens to face the East. When they were in QT in another room, they also chose the left side (east side) of the tank for their dancing.
I've been wondering if this is just coincidence or perhaps they have an instinctive sense of direction and are just trying to get "home."
Well, that's my observation!! Where do your kuhlis dance??

If you find this utterly ridiculous, just nicely tell me to go back to baking brownies, and I won't be offended in the least.
