Al remember the system I was saying that I was going to put in? The 3 Tsunami 800's on the intake and drain side. Your system will be based on your biggest bag. For instance my biggest bag rightnow is a 550lb (16"x16"60" x.036=552lbs) the system I am putting says it will fill 110lbs a min. realisticly we'll say 100lbs a min. So my new system will fill in 5.53 min so roughly 5 min 35 sec. If your biggest bag is 455lb then you would be right around 4.55 min so about 4 min 35 sec. Just a simple way to figure out the tsunami fill times. The tsunami 1200 say 166lbs a min and the Tsunami 800 syas 110lbs a min. But remember Intake and line lengths will reduce those numbers. So it's a good rule to knock 10% off of those fill times.
Hope this helps.