I am thinking of placing these instead of MH they are cheap and seem to do the job for nano and larger systems.
Triple Puck Kit with Dimmable Drivers $140
http://www.rapidled.com/8-x-solderless-triple-puck-kit-with-dimmable-drivers/
Triple Puck Kit with Dimmable Drivers $140
http://www.rapidled.com/8-x-solderless-triple-puck-kit-with-dimmable-drivers/