Drained and filled the pool. Took over 2 days. But WOW. The effectiveness of adding bleach is now remarkable. The fresh water was a little green and I added about about 12 gallons of bleach and a quart of Cu algaecide. All algae that I've been fighting for months to get off the sides of the pool disappeared over night.

I'll start doing ph, cl and cya tests over the next few days, Thanks kevin