He swam right down to the bottom of the filter tube of my biorb this evening.
Was chatting to DP and noticed him out the corner of my eye!
Luckily I was able to unclip the filter and reverse him out again...but can anyone tell me - if it happens again and I'm not here in a superhero cape to come to the rescue - would he be okay if he does it again and it takes me a while to notice?
TIA 