I'm currently running just a protein skimmer and live rock in my tank which I've heard is called a "Berlin system" is this the best way to achieve the clearest water possible or is some other type of filtration needed? thanks.
I think it kind of depends on your tank but tecnically that will work. I know alot of guys have a "water polisher" to clean the tank further. Some guys use a refugium for added chemical and biological filtration.