A suggestion for mixing the Alum, use a trolling motor (if you have one). I found that I use half the amouunt of alum when mixed with a trolling motor for the same results verses simple paddle mixing. I do this in a 55 gallon drum and then spray the results with a 2" trash pump. I spend 10 minutes letting it churn. Since the 4" rain we had the other day here outside of Houston, I have a terrible clay problem.
