Chase31's 50 starfire aquascape reef

[Chase31]

well it wasnt the heater as when i woke up it was all normal im going to test my levels first thing in the morning and do a 50% water change. i have a skimmer running and tons of surface exchange so i dont think its o2, down to something leaching? or just bad acclimation? is 30-35 mins to short? dripped 2-3 drops a second? they were in a large becel container