I have a pool that's about 26 years old now. The plaster is pitted algae heaven right now.

I'm seriously considering trying an Ultraguard application, but my wife doesn't like the idea and thinks I should find a good contractor. I don't know that I have the money for that, but does anyone have any recommendations in the Phoenix area for either a replaster or a Pebbletec finish (or other variants)?

Thanks in advance!