Well i was thinking some schooling fish, a few anthias, some chromis, pair of clowns with anem, maybe a couple angels. My neighbor has 2 california rays in his 200 gallon, Id like to keep one in this tank just not sure whether that is a possibility yet, havent done enough research on them to make a decision. but that is pretty much it besides some mushrooms and kenya tree. just standard easy stuff. To answer your question from the other thread gary I made it very simple and easy to change out the socks. so i feel that it would be more cost efficient and easier in the long run to just swap them out. really only takes seconds. But i think i am planning on putting a small skimmer in later on. nothing fancy though. Its just the maintenance that comes with the skimmer we were trying to avoid. but if I have to do it for my 75 might as well do them both at the same time right?