What does everyone use to attach their aquarium backgrounds? I use tape but it doesnt make the colour show up very bright. I have heard some people put a thin layer of vaseline or something on it and stick it to the tank. What works the best? Also I see that a certain chain store sells something in a tube to put on the background. A fvriend of mine said he tried vaseline and it looked awful- lots of bubbles everywhere and it was hard to clen it off. Any suggestions would be great.