Bentonite for Ponds - Natural Waterscapes
Drill 15 - 1/4" to 3/8" holes in the bottom of a 5 gallon bucket. Place 6-8 inches of soil from the pond to be sealed in the bottom of the bucket. From the application rate table, select the bentonite application rate for the soil that matches the pond soils. Mix soil with bentonite at that rate in lbs/square foot.