Hi everyone I have been lurking for quite a while now and have decided that I am going to just go ahead and try to make a go with darts. I have been sitting her scouring pictures to try and see what people us to keep their home made tanks shut and cannot figure it out. I have looked at Josh's Frogs Door Catch and cannot figure out how I would make that work. I must be missing something. I would like to do either a 10 or 20H vertical as I have those two tanks sitting around and slightly limited space so vertical is better than horizontal. So everyone how do you keep your vertical tank shut? Thanks!