Here you go, apparently you can use a vertex IN250/280 impeller.
http://web1.reefcentral.com/forums/s....php?t=2164754
They have them at J&L for $48
http://www.jlaquatics.com/product/vt...+Impeller.html
Good to know as I got my replacement impeller from Ocean Aquatics which isn't around anymore. Hopefully this works for you and saves you some money
