This looks about right - just fill er up! But I actually read and looked at my laundry detergent and realized for a large load, you really only need this:
That's like 2/3 of a cap full. Yep. Line 3 is for a large load (at least on this bottle of Wisk I'm sporting this week).
I've probably wasted many a laundry detergent in the past years. I know this and I know the right way to do it - so I'm making a more conscious effort to actually measure the stuff.