wild water lillies

[goldfishin]

My brother planted some lillies in a pond or more like a duck pond, not much water. The lilies really took over and I want to get some for my tubs.
What do you use to kill all the critters and not the plants. How much?

[Ichthius]

Get all the dirt off of them, trim back the leaves and treat with 10 ppm potassium permanganate for an hour.

Take 3 level tablespoons fine potassium permanganate put it in one quart of water. This will give you 2 ppm when dosed at one mL per 10 gallons. So 5 ml or a teaspoon per 10 gallons will give you 10 ppm.

http://aquanic.org/species/ornamentals/documents/permanganate.pdf

Here's another take:
http://www.ehow.com/how_5505892_treat-pond-plants-potassium-permanganate.html


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