[NATIVEVAMAN]

I would definatly use a sump and a refugium my 65 is going too have a sump and refugium of almost 40 gallons.Chillers would depend on the wattage of your lights and how they heat the tank, I would say thats a 50/50 thing.As for heaters use two for safety reason 200 to 300 watts each in the sump.UV steralizers are a good thing to a degree.They will kill just about anything that will pass thru them including the pods you grow in the refugium.Look into an ozoneizer it just kills pathogens that might be harmful to your critter and will go a long way to keep your water very clear.They make some plastics very brittle so your protien skimmer and other tubing should be ozone safe.The drawback is the uvsteralizer is around 100$'s and the ozoneizer is about 300$'s but well worth it. There.....that should keep your mind jumping for a few days lol