Switch,
I think people neeed to be careful how they read posts like these. WHile many people believe the more expensive mechanical filtration is a must, some other do not believe it is and often prove why.
It shouldn't be construed as an across the board, you don't need this piece of equipment or that piece of equipment, rather an educated approach to maintaining your reef. In a second I could put you in a place in NJ where if you did what you did, you'd be overrun by nuisance algae.
Point being, as ANT outlined, what ARE the factors that are attributed to your success? - and a nice one I may add.
Scrubber is definitely one of them. I am planning on building one of these for my fish and coral hold system (390g) - from my reading, I have found them to be very effective method of exporting phosphates and some nutrients, however, I have fish coming in and out all the time - what is the level of acceptance, in gallons and skimmer volume where this would be successful. What I mean is, the combination of water change volume and bacteria and nutrient export in your system is what is making it successful. Many people can't find that sweet spot, often overload their systems with fish nad corals and NEED a skimmer or have to do larger water changes - it's like obesity for reefs and thier keepers
I'd be curious to know more scientific information about your reef - nutrient levels (bioload) actual test readins across the board, TAP TDS, which test kits you're using etc.
That would be helpful to those keeing a reef similar to yours. Look forward to hearing more about your system.
Jim