Hey I was thinking of getting into saltwater so I was wondering about what protein skimmer to get. I know that with filters, it's good to get a filter that's rated for higher than the tank you're using it for. What about with skimmers? I was thinking about getting a 75 gallon tank and wasnt sure if I should get the skimmer rated for a 70 gallon or the 1 rated for a 100 gallon.