Add about 400-800 pounds of HYDRATED Lime till the water turns gin clear. Use your trash pump to pump water into a barrel or stock tank to circulate, dissolve and spread the hydrated lime quickly.
This will raise your pH to 12 or higher, very rapidly, shocking and killing the fish. residual high pH will burn the gills of any fish not killed right away, even mud dwelling fish if there are any...
In about 2 weeks, the pH will drop back to a safe stocking level, as the H lime action is short lived. You will also be left with residual calcium that will benefit future fish growth.
