I work in MMU and I use a timer to control the lights. This tank is literally easy to keep as I do not use any filter at all (which is partly the cause of the BGA problem). Instead what I have is only a DIY CO2 setup and lights.

As promised, here is a page which I just come up with to describe the DIY lighting:

http://www1.mmu.edu.my/~kkteoh/lights.htm

As an aside, would anyone know where I can get hold of the Florida Flag Fish locally?