I didn't even realize we had a state aquarium club- then noticed I'd liked the facebook page when I first moved to NH a couple years ago. I think it would definitely help to become active on facebook again, as well as here. I think you should also heavily revamp the website, and make it really clear what you're gaining by joining.
I was actually just looking to join the club in Boston. It may help to talk to the organizer of that club and see about partnering up? It's a much bigger and obviously much older club so that could help if they give you some shout outs.