I went downstairs tonight to see how the fish were doing and could only find one of them. I looked EVERYWHERE, behind rocks, behind the background, on the floor, floating......couldn't find the other two. I thought maybe these guys somehow found the way into the sump. Sure enough, somehow they got through a little hole in the strainers and thins is where I found them.....
One in each end of the pipe. They were perfectly fine and I tossed them back into the tank and modified the strainer so they can't do it again. lol