thanks people.
theres bound to be vibrations in a room full of kids, lol. i'm going to try using it as a tool to help with my boy at school. his school work is great, but he has a few behaviour issues that occasionally get him sent out of class. so the idea is, it is his job to monitor the fish and make sure they look happy and healthy, but in order to do this, he must be in class, so no more being naughty and getting sent out. And, i'm also hoping, it will help him make friends as they are his fish (of sorts) and he can explain what keeping them is like