I'm looking for an economical way to put a black background on my fishroom tanks without painting them. I don't want to paint them because sometime I switch them front view to side depending on what I have down there. I'm also scared away from paying a couple bucks a foot for the plastic background. I'm trying to do a handfull of 10s, two 20 longs, a 40 breeder, 75, 90 and 100. Thanks.