I am new to the saltwater world and this is what I have: 75 gallon tank with stand I have on order a lighting system with moonlinghting and 2 power head pumps, I have the heaters, salt, testing equipment and other small stuff. I know that I want to run a sump system on the tank to keep the clean look and keep a more stable tank for the long run. I will have alot of questions in the future, but I do have one at this time. With the sump system what size pumps do I need to get, supply and return also I havent ordered the skimmer so if this weighs in let me know please. Keep in mind I am a fire fighter and not a chemist, I need this simple. Thanks