My 6 year old pool has a nice Hydrazzo pacifica blue finish, but the hydrazzo on the two pool steps is getting big pitting because the spa waterfall pours onto the steps and I guess it is eroding the hydrazzo there, but only on the two steps. Is this something that I can fix myself? I'm thinking to drain the pool, pressure wash and acid wash the steps, then putting a coat of the same hydrazzo material and polishing it. It doesn't seem to me that it would be very hard to do, but of course my worry would be that the new hydrazzo would bond well to the old. Has anyone done this? Any thoughts?