Laticauda;4956849; said:If you have a bare bottom, you can use the extra attachment to pump the old water into the toilet or outside (or however you get rid of your dirty water.) The only benefit to that is faster draining of the tank.
That's what I was thinking.....but I use the fill and drain at the same time method! I'm barebottom too so this is impractical. It would drain faster then I can fill (assuming). A 30% WC is roughly half of my bathtub hence a full tub by draining and filling simultaneously is still 30%. This process also stirs any dead zones that my spray bars might miss. It's a good idea though if you drain then fill....