Here's a picture of mine when I installed it 3 years ago:
I've just taken down my tank and cleaned up the dream box ready for a house move. It's cleaned up as good as the day I bought it which isn't bad considering it's in my garage so not the best of environments.
I even built a matching calcium reactor out of a RE 150 multi-filter. It's the best calcium reactor I ever used. I ran it for the last 2 years and just unscrewed the lid every couple of months and threw in more media. Never cleaned it or messed around with CO2 air-locks like with my old Deltec PF601. Such a simple design but so effective.