Has he settled in yet? Mine is a clown of the tank, he competes with Griffie for food which gets Griffie upset. I am watching him dig whatever he has been building since he came home quite awhile ago. I think he has a magical rock, much like the Chronicles of Narnia, where he goes into another world. I had no clue I had so much sand since there are huge piles around the rock that he has removed.
I think the chattering and clicking is the best thing. I had my Canreef buddy over yesterday and he even thought the noises were a chattering powerhead
You will have no buyers remorse on your Trigger. I wish I could have a clown Trigger now... they are awesome but I don't want fighting.