Ok coming soon i am going to finally turn my 55 into a saltwater. Problem número UNO is idk anything about the filtrating. What would be the best kind of filter I could use be it DIY or traditional.
Most of your biological will come from live rock. That being said, a sump is by far the easiest way to filter a SW tank. Plus it gives you a place to hide heaters and to place a protein skimmer.