The best I can offer is my experience with my elephant ear sponge. Usually the same requirements for all sponges though (as far as I know). Keep out of direct light, find an overhang or cave to place in or near. Most, if not all, filter feed. Mine has clear tubes that come out. Pretty much all there is to it, well along with good water condidtions and such (has worked for me for over 6 months). Photoplankton wouldnt hurt, but I dont dose that yet. Do you know what kind it is? HTH. Here's a pic of mine awhile back. (its darker than the pic now)