I have just done my first big water change of 2021. (both the 550L & 120L aquariums)
Sadly a Gold laser had died yesterday so I'm down to 29 x Gold laser cory.
I have just done my first big water change of 2021. (both the 550L & 120L aquariums)
No idea except maybe one of the plecos was a bit of a bully and the cory didn't move fast enough.