Pond Boss Forums INTRO New Forum Member Introduction New Member: Constructing a Natural Swimming Pond

http://fisheries.tamu.edu/files/2013/09/...s-and-Tanks.pdf

Table 4 is the one that applies to your pond. To be on the safe side, find a pH tester that can read in the 10.0-12.0 range. Test the pH of the water after application to be sure you applied enough due to the amount of water in the bottom of the pond. It should be higher than 11.0.

For instance, a 50' x 100' area is .11 acre which would require between 165 and 220 pounds.

edit: If the water is 6" deep, you have almost 3,000 gallons in there. I'd go with 50# spread evenly over the water surface and test the pH. Buy 2-3 bags, you can always take back the unused bags. It would be easier on you if you could mix up small amounts in a 5 gal bucket (say 1/2 a bucketful of water at a time) and throw that water/hydrated lime mixture into the pond repeating the process around the edge until it's all in the pond and the remaining water in the pond has a high enough pH.