Pond Boss Forums GENERAL QUESTIONS Muddy water Lbs of Alum to Dissolve in 200 Gallons?

I have a one acre-foot pond and have determined I need to apply 150 lbs of Alum. I have a 200 gallon tank in which to dissolve the alum and spray it on the pond.

How many lbs of alum should I try to dissolve in the tank before application? Can I go as high as 50 lbs at a time?

Note I am off grid and will be using the pond water to mix with the alum.