I am tired of my snakes flipping over their water bowls. It never fails that every time I clean and give them fresh bedding at least 3 or 4 of them flip their bowl and soak the bedding. I was thinking about switching to deli cups. They seem so much easier. I was hoping that someone could give me some advice on (1) where is the best place to order them from (2) what size cup and what size pvc coupling to use (3) how is the best and safest way to attach the coupling to my tubs. I use the 41 qt. sterilite tubs if that matters. I would really like to get some of the tubs that have the holder built in, but that is not within my budget right now. I would appreciate any advice anyone could give me.