I have a 20 gallon long lying around that I can use as a QT. He right now is in a 20 gallon long cut off in the middle separating him from some other fish. should I clean it our put in some sand that is probably cycled and some plants(a sword and a tiny bit of java without the algae)?
I turned off the lights but I can't reach him and idk if he can get to the surface but if I put my hand in he will rip his eye out for sure. I really don't know what to do. I also have a 2 gallon cylinder tank that I had him in originally. I also have the salt.