Bill, on sunny hot days I've seen morning vs afternoon temp differences of 10 or 12F at my pond. Don't know how much DO levels change, though.

Last edited by anthropic; 05/28/20 09:16 PM.
7ac 2015 CNBG RES FHM 2016 TP FLMB 2017 NLMB GSH L 2018 TP & 70 HSB PK 2019 TP RBT 2020 TFS TP 25 HSB 250 F1,L,RBT -206 2021 TFS TP GSH L,-312 2022 GSH TP CR TFS RBT -234, 2023 BG TP TFS NLMB, -160