Hi guys, I'm new here and was wondering if I could get a little info on saltwater chillers. I'm thinking of getting a pet lobster and I've been doing alot of research into the materials needed. I noticed that i need a chiller, but all the ones Ive come across are hundreds of dollars. I'll be using a 55gal tank and was wondering if anyone could recommend anything that wasn't that expensive. A chiller seems like a pretty simple concept but I'm confused as to why their so expensive. Maybe I'm looking at the wrong types? Any help I can get would be much appreciate, thanks!