I think I've come very close to suffocating Ramses
. His filter needed to be cleaned today, because the outflow was faltering, so I cleaned the media in the middle canister, reassembled it, turned it on, and forgot about it. . . Having already turned the lights in the tank off.
That was this afternoon - about 3.
About an hour ago, I noticed I hadn't seen Ramses for a while. He's usually swimming about quite happily, until the room goes dark when he settles down in his corner for the night. About 10:10, I came offline from this site, turned the computer off, and noticed that his tank seemed oddly quiet (he has an Aquaball 2210 and I can usually hear the air bubbles). What with not seeing him for a while, I went to check he was OK. Couldn't see him, but the filter caught my eye. No sign of any air bubbles and very little disturbance
No wonder my little guy was subdued!! Took the filter out of the water, intending to leave it there, turned it up to just under full power and decide to check the air diffuser attachment. It's fine . . . and thankfully, so is Ramses - he's swimming round like nothing was ever wrong but OMG what a fright . . . the lights are on now - as well as the diffuser and the filter on full power.
T.L