Update...
With the help of several members here I think I am finally going in the right direction... A very big THANKS to all that helped especially Bill Cody who helped with water testing and several ideas and suggestion via PM...
We decided that I had a typical HAB because my nitrogen to phosphorus was way out of balance.. My Ortho-p was .079 and my Nitrates were 1.1 which put me way short of the suggested 20 to 1 ratio of beneficial blooms..
The approach I took was start a bacteria program and try to get the nitrogen levels up.. I did simple things like spraying surface films with phycomycin and then added bacteria after to gobble up the nutrients being released.. Also added a slow release zero P yard fertilizer even around the edge of the pond which I normally don't do... Spraying would get me a few days of better appearance but I could still see the suspended particles in the water..
June came and went with little headway made.. Then July came and I decided to take a little more of an aggressive approach via some out of the box thinking of Bill... I got a gallon of 28% liquid nitrogen and added about a 1/3 of a gallon to see what would happen.. Really didn't see an immediate change, but had a day with a perfect wind to spray the surface films.. Sprayed with 9:1 ratio Cutrine with 2 ounces if reward mixed in...
That was in my opinion of the turning point...I don't know if the added nitrogen plus/or the copper/reward being enough to push things in the right direction, but I am seeing a LOT nicer looking pond.. Have only had to treat with phycomycin once since then..
A few pictures along the way... Will have to get some new ones to show the pond now..
