you don't want to scrub metal wand lips with suction on ceramic tile. get a
glide if you want to hack it out with a wand. If not get you a hard surface tool made for it.
You can do a good job with a wand though honestly. Get you a good hard surface cleaner, alkaline, and acid, and a brush. You need to make sure you test spots first to see if you do any damage especially with an alkaline cleaner. I also suggest you do a bit of research before you take the plunge. But seriously your wand can do an adequate job rinsing for the time being....and as you do a few save up for a hard surface tool. Also you should get at least .50 a ft so don't do it too cheap or you wont be able to afford new equipment and all that good stuff.