It wasn't really a guess. I measured off the pipe. At it's peak it was 2" below the bottom of the pipe, now it's about 5.5" below the pipe. Give or take 1/4" I thought I was close enough. So,, is 3.5" in 8 days reason to be concerned? Sorry if I'm blunt. I should have made that clear in my previous post. Thx
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
