FishinPal and Joshua Flowers, thanks for your info, pics, and videos. Will be very helpful, if/when I finally get around to applying the soilfloc. Thanks for posting!
9 yr old pond, 1 ac, 15' deep. RES, YP, GS, FHM (no longer), HBG (going away), SMB, and HSB (only one seen in 5 yrs) Restocked HSB (2020) Have seen one of these. I think that's about all I should put in my little pond. Otter attack in 2023