Hopefully I'm laying floor at our mental health organisation's new space this week and then setting up the marine tank! It has a sump with I believe a refugium section, pic put up by the guy I got it from for reference. This is new for me as my home tank has live rock and mechanical filtration. This is a 60 litre or 16 gallon display with a 40 litre or 10.5 gallon sump - I'm going with a few anemones and a pair of clowns as they seem to be the most appropriate fish for a smaller tank and are said to be hardy (although there won't be any rough treatment, our cohort are very respectful and most love animals). I have a good source for very mature live rock and I get natural seawater delivered. Any advice, suggestions, links to good resources for setting up a more traditional marine system, etc.? What am I bet looking for as far as powerheads, pump, etc? Many thanks!