I have a castle in my 55 gallon tank, and the pleco and glass catfish REFUSE to leave it. The only way I can check to see if they are still alive is to sneak in the room at night and shine a flashlight in the tank. Is there any way to get these guys out for a little bit during the daytime? I didn't even think the glass catfish were nocturnal! If I bought my pleco a buddy would that help (I figure if anything they wouldnt want to be in the same hiding spot)?