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Leaching acorns in a canal

 
pollinator
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Location: Haute Vienne, France
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I can harvest acorns from about 20 mature oaks that sit right next to a canal. I was thinking of tossing bags of acorns into the canal to leach out the tannins. I have a couple of questions
-Is anything likely to eat them?
- How long should it take at a minimum? (I'm thinking a week or two, the canal has a flow, but a very slow one)
-The waterway is used quite heavily by barges and pleasure boats, there's also the question of other pollutants in the water (run-off etc), I know Paul has high standards, but how clean should the water have to be realistically for leaching if I do the final rinse in drinking water?

I'd really appreciate it if you have any ideas, or even better, direct experience of doing this.
 
pollinator
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If you wouldn't eat what comes out of the canal, then I'd think twice about soaking your acorns in it. Soaking acorns in still water is less efficient than soaking them in running water, but it will work. As a broad rule of thumb, though, the same processes that soak the tannins out will soak at least some substances that I'd think twice about eating in.

I'd be inclined to suggest not.
 
Mother Tree
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Watch out for muscovy ducks, too. They like acorns!

https://permies.com/forums/posts/list/39833#311388





Can't offer much advice on the leaching as ours are sweet acorns, when the ducks leave us enough to eat...
 
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