More of a personal reward than anything I suppose. However I do make a little cash from it by selling coral frags, Green sinularia to be exact. Luckily I have a really good local fish store that gives me store credit for them, the coral grows like a weed.
Ive been into reef-keeping for several years now, my first tank only being 29gallons and a couple of years back I moved up to a 46gallon. I mainly keep soft leather corals, clownfish and a green anemone. I also have a yellow watchman goby that I absolutely adore, hes like my little bull dog and he always has a perpetual frown. This is a tank shot from about a month ago, disregard the date stamp, I can never keep fresh batteries in my camera for too long.
If your interested in starting a saltwater aquarium or even if you are a seasoned expert id suggest you look into sites such as. http://reefcentral.com/ or even http://www.nano-reef.com