I would question those settings a bit. If you take the DCT 4000 for example, pump manufacturer states that controllable flow is between 2837 to 4000 Lph so that conflicts with the number 1 setting of 48%.
I found this on a one of international website that was selling these pumps. So I seen this info on there pumps and the only one that I seen so far. I thought it was good info
is it accuracy I thought it was. I you have the right info please post it. I'm looking to
buy a 8000 that will be so helpful to me.