well first all ur coralline will be eaten becuase of ur urchin and the urchins r also a danger to starfish.then the madarins is going to die of starvatiion from the lack of live rock and copepods.u r already over stocked as it is so i would consider just stopping and ur damsels is going to turn old and grey.i would get rid of the madarin,urchins and damsel then buy ur next fish and the last fish