Hi, I am in Australia and I have been researching filters for the new tank I am setting up. Its a 292 litre or 77 gallon tank. Because everything I am reading applies to the brand of filters and measurements in gallons that are available in the US but not in Australia, its hard to do a comparison. My question is: Am I better off getting one big canister that filters 2700 litres per hour (which is a bit big perhaps) or get 2 smaller canister filters. If I am better off with 2 filters....what size? Should I add any other type of filtration in a tank that size? Does the 5 x tank volume for filtration also apply when calculating in litres instead of gallons? Thanks!