I use fabric, I used velcro to attatch it to the back of the tank. Its washable and easy to apply. Its not as much of a mess either. I tried the Veggie oil with the laminated background and it works great but is very time consuming. and the results can reverse if you have temperature fluctuations in your home (we all do). here are some befor and afters.
The first and second thumb are with oil but what happens when you dont get it perfect and the temps change. I guess the trick to the oil method is dont tape down the sides. Glass expands much slower than the laminated back ground so if you tape it down its causes bubbles =( didnt know that. The third is the black fabric. The fourth is after 1 week after CO2
and ferts with my DW in it.
Painting is good to lots of people on AA use it and love it. The only problem is once its on there you cant change your mind. With the fabric set up if i want to i can go with a differnt color or some crazy pattern (i am thinking Batman j/k