I never knew about the fabric softener thing! Learn something every day.
I use Color Catchers in my wash in case I do get bleeding. I use mostly batiks and the reds, navy and blacks if they are overdyed will bleed some. If the color catchers are really dark, I run it through another cycle.
Otherwise I wash it on delicate with laundry soap and dry on delicate or medium since cotton on my dryer is HOT!