I think the first time I did an unofficial jar test it took my water approx a week to clear up sitting in the garage on a shelf. The first time I tested it with Alum it was clear in about 15mins. I haven't moved any further than that though. I was just about to pull the trigger on applications and for whatever reason the water cleared up and has been 12-24" visible on the secchi disk ever since (very strange).

Curious, how much water clarity are you looking to get out of the pond?

1.5acre LMB, YP, BG, RES, GSH, Seasonal Tilapia
I subscribe to Pond Boss Magazine