Actually, T. derasa does fine in lower light tanks (to a point, of course). Depending on the depth of the tank, you could even keep one with a good amount of PC lighting. This is also true of T. squamosa, T. gigas, and H. hipoppus.
You really do need MH for T. crocea and anything but a gold T. maxima.
Another thing that helps are regular feedings of live phytoplankton.