Ive seen mine do it every night now since I got them, all piled up together, sideways, upside down but I'm over the shock now and just giggle at them cos they are sooo cute!
Afrikan, I know the 3 footer is not ideal in the long run but at the mo' they are only small, about 8/9cms and I'm making arrangements for a bigger tank. Honest, I wouldn't have them if I couldn't care for them properly. That's why I'm trying to get their choice of tank mates right and am always keen for advise.