Hello everybody. My name is Andrew I had a 90 gallon reef tank when I got into the hobby years ago. I wanted to get back into it and got a 45 gallon tank to start up. I ended up starting fresh but quickly realized how much I missed salt. I want to take it slow just get some sand live rock maybe a clown and clean up crew. Trying to take it much slower this time haha. A few questions I had were. I have a hang on back filter. Can I start my tank off without getting crazy expensive lighting and a protein skimmer. I know when I get into corals I will have to upgrade. Just looking for the least expansive way to start. Thanks for any help.