Upload below, any image you choose, as your own custom static vinyl aquarium background. If you want a particular colour you are welcome to make a note in the custom order form for any hex colour. You will find hex colours doing a google search. Next choose the closest size to your fish tank. A little larger if your happy to cut with a blade once in place on your tank, or a little smaller, which we find hardly noticeable if you don’t want to have to trim.