Neo, I'm not sure about the ratio thing. I just did the test using 1,2,& 3 level tablespoons of alum to 1 gallon of water as described http://www.aces.edu/dept/fisheries/rec_fishing/pdf/muddypondstexas.pdf My water cleared using the 2 & 3 tablespoon levels after waiting overnight. So, assuming approx 2 acres & average 8' depth = 16ac/ft x 60lbs = 960lbs/50 lbs per sack = 20 sacks alum @ $20.00/sack is $400.00. Haven't done this yet as I am waiting on small gas water pump & Alum, but let you know it turns out!..du
