jayson at saltwater connection in winnipeg has a humungous skimmer like that..maybe even 2, been a while since i went there.. but I kid you not it was like 7' tall.
he makes his own -- a buddy of mine here in regina has one by swc powered by a mak4. makes me wish i knew how to work with acrylic and actually had lots on hand. these skimmers look fairly simple to construct with the right plumbing and air injection things.
