I set up my refugium 4 months ago it is low tech filter that has breathed new life into my reef tank. Made it my self as for a 1000 gallon tank stocked with fish that is a big bio-load I would not use it as a stand alone filter.
You can build your Refugium out of a laundry basket or an old tank--don't matter
I use a 200 micron sock as a pre filter (rinse out every two weeks) fabricate baffles (just like a "wet dry sump" I run a 55 watt PC over the refugium 24/7 as the water slowly flows the macro algae absorbs excess nutrient that in turn limits your excess waste.
When my refuguim grows to thick I simply reach in and grab a handful of "sea-weed" and feed my yellow tang he loves the fresh food and I love the fact that it's free!