Hi all I have been reading through the marine tank forums for the past two days now and got a few questions about the stuff I have been reading. Ok my first question is on the sumps I am planing on buying a 180 gal + sized tank so what sized sump would be needed for a tank of this size and How exactly do they work I don't quite understand all the things I have been reading about them. Also If I do use a sump on my tank do I not have to use a protein skimmer I remember reading somewhere that it keeps the tank water clear. Also what kind of Filters would be required for a tank of this size I am looking at the Hydor Koralia Controllable Pumps & Wavemakers on DR.foster smith This is all greek to me so I am a little in awe at the world of maine fish keeping Is there any where I could go to read some more in depth stuff about the diffrent parts required to make a salt water tank work? Is there anything else I should look at getting for the tank so Far I got a Sump, Powerheads and filter (although im unsure of what a good brand would be),And Refractometor Written down what else would I need this is just in the planning and priceing stage so no rush and sorry if I missed all this in my readings this is all just so alien to me. Its been years since I last keept a tank and that was a 55 gal fresh water with undergravel filter back in the day where the fish only got as big as there tank:raspberry: