Seems like a few RSM Tanks are going of late cnfzd:Bigjacko - sorry to see another RSM taken down. I'm not sure if we've seen an upgrade from a 250 to a bigger tank before, but good luck on your new and bigger piece of the ocean! You'd better let us see the new tank when you get it going, or give us a link to wherever you set up a new tank thread! Sounds nice!