After Talking to Rex a few times, I started using his advice in treating some local ponds-including my own. One thing I found when using the dirty pond water to mix solution, you can get a funky reaction in the mix tank without some super aggressive constant agitation.
Concentrate 2/3rds of your Alum (80-100lbs) into the deepest 1/3rd of the water, then use the last bag to spray the outer-shallowest water. I still think using hydrated lime is a good idea at half Alum rate because it also aides in the clearing/binding process.
I've had great luck with Alum but I had some great direction from Rex on my applications so if he chimes in, follow his advise.
