If you've been able to shock the pool without staining so far, then don't worry about the minerals--if they're there, the pool guy must have put them there. Ca hardness is high at 540, but as long as your TA and pH stay fairly low, it shouldn't be a problem for you right now. Ignore the phosphate reading, it's meaningless to you for right now. As far as the new gunite job, how does your pool look?

As far as the algae goes, shock your pool up to 25 ppm and keep it there by testing and adding more a couple of times daily...here's the link to the bleach calculator you can use to help determine how much you need.

http://www.hal-pc.org/~mwsmith2/BleachCalc262.exe

Janet