My canister filter is an Aquatop CF400UV and my protein skimmer is an Eshopps PSK-100H hob skimmer. My lighting is a 36 inch Current USA Orbit Marine LED. I picked up all of these items from the LFS for less than 200 each. The rock was the most expensive thing I have purchased for my tank. I got the tank and stand for 60 bucks from an old school friend I found on facebook. The lighting is cool because it has a remote and a control box that is already pre-programmed with lighting schedules that you can always manually adjust for your own lighting needs. I just wanted to throw out the exact names of the equipment I have so you or anyone else can look online at reviews and videos and see if maybe that is the route you want to take. All of my tanks were always freshwater but when i had to relocate for my job, I switched it all over to saltwater and I was definitely working with a budget so I did a lot of looking for good stuff that wasnt gonna break the bank. If you want to go the used route, craigslist usually has some people selling tank equipment but if you are anything like me, I have to start with brand new equipment so I am not left wondering why its making that weird noise or what did that weird stain come from? How many hours does this pump have on it?