Hi just bought an empty tank 220ltr and an eheim filter. I will be adding t5 compact lighting and heater. I need to know about the water & salt ( how much to add) and when to add the LR, also my filter comes without media, do I need to add it with LR in the tank? I will also be adding a protein skimmer but not sure on what size I need etc.. and the sand for the bottom, not sure again what to get. Please can anyone help