I went away for 4 days recently and asked a neighbor to help care for the cats. When I returned they mentioned that
'I saw the tank lights were off so I turned them on for you'
this of course meant they were ON for 24/7 since the time they did it and they told me about it
Of course this did NOT help with my BBA issue lol
So, I remember telling them before I left that the tank was fully automated and they did not have to do anything with the tank.
I should have been more explicit about the lights and timers..
Will know for next time. They meant well and that is the bigger lesson..