Im wanting to start a reef tank, it will be my first saltwater tank. I have ow ed plent of freshwater tanks. I have a roughly 50 to 65 gallon tall cube tank that was given to me that I want to use. I would rather not do a sump and I cant find a AIO to put in it at all so hang on back seems like my way to go. If I go with hang on what brands and sizes of everything do i need? The same with if I go with a sump. Im looking for more specific info on the products and what sizes I need. I know they need to be good ones but thats not telling me which one exactly to get or anything. Im ready to get this tank started so please help me out!