I have been coming across a lot of cool sponges and gorgonians (photosynthetic and non-photosynthic while shopping for macro algae. I understand they do best in established "dirty" tanks, but will they do well in a macro-tank where the only food source will be from direct feeding/dosing, Also, do sponges have to have live plankton, or will a filter feeder food like Kents microvert suffice? I'm interested in various purple feather/ruffle gorgonians and various red, blue and orange sponges.