Guys, I added 3000 lbs of Lime to my pond after I had my water checked and had a PH of 6.7 After the Lime it went up to 8.1
Will I be ok added 350 lbs of Alum to my pond. How much do ya'll think my PH will drop? Just def don't want a fish kill.
Thanks in advance.

1 1/4 acre L shaped pond, 6 to 9 ft deep. Finished 7/7/16. Stocked with LMB, HBG, BG, CNBG, RES, FHM. Can't wait to fish it. GO SAINTS!!!