|Mr. T in DC / Foter.com / CC BY-ND|
But kudos to Edward C Taylor who wrote an article called Little Tanks, Big Opportunities for the November 2013 issue of the magazine Pet Business.
The article has a generally upbeat tone but Taylor was also pithily emphasize that the goal is for the tank to be successful long after it goes out the door.
For these reason he recommends that nano tanks are really only for freshwater unless you are a marine aquarium expert, that they need to be sold by trained staff who are willing and empowered to refuse to sell livestock not suited to mall tanks, and that the ideal nano species are often hard to get in the trade.
It is a short but informative article and I found that it is also available online here.