I've got one set up at my office at reception. Just the Flex 9.
using stock equipment, light is on a timer. I did baffle one of the outputs with a pre-filter sponge so the endlers (boys only) aren't blown around the whole tank.
I've had it with low light plants (java ferns, anubias, crypts). Currently has some dwarf chain sword and limnophila sessiliflora. The limnophila has been growing fine. The dwarf chain sword is still good, but not sending out runners from what I can see. I may change it back to crypt parva.
Nice little tank.