Worked great , a heck of alot of rubbing and sponging but alot better than before , that grout was really ingrained on the surface .

Now I need a timeline how to finish properly.

-Wall tiles are good , just need to seal grout
-Black granite tiles around tub and skirt im not happy with grout color , wanted as dark as possible still are wht/gry
-floor tile is looking good another sponge and should be good

Need white caulk around tub
Black grout in granite
Clear caulk for Schluter on tile base and around tub tile

So like with other construction practices work top down ?
white caulk tub first , black grout touch-up next ,clear caulk around baseboard , then seal to finish ?

thanks again

Chris