I have a 90 Gallon long fish tank. Power went out an hour ago. The first 15 minutes I splashed a plastic spoon in there to try and put some oxygen in the water. Most posts online said u have a couple of hours before you have to worry about it. Temp isn't an issue it will stay at 78. I did you red slime remover a few weeks ago and even though I have done a couple water changes I know the oxygen level in my tank may already be a little low from that. I was also told the fish would swim towards the top if there was a problem. Tomorrow I am going to go get some battery powered bubblers. Sorry for rambling. My question is will the fish tell me there's no air if I'm watching or should I start splashing in there now to keep oxygen levels ok.


