In my mud-bottom pond I've not seen any crawfish or signs of them since I've been here (4 years), and if I need grass (shoreline grasses, pond weeds/vegatation) to establish Grass Shrimp, I'm void in that area as well.
If not for the Xmas trees and PVC trees I've put in, other than some natural lay-downs along some of the shoreline, my pond would be completely void of cover!
And for those reasons I'm not sure GSH would be a viable option (plus I'm still removing BCP).
Ah, so much to do/consider/change/improve, etc.
But always find time to fish
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