Cheap, easy, DIY, backgrounds
Well, this week I'm planning to switch substrate out in all of my tanks, so I might as well add backgrounds while I'm at it.
I've heard a ton of different ideas on how to DIY them. Most common is obviously spray paint, but I don't know if that's the best route for me. I've already got fish in the tank and I'd be worried about some of the paint getting into the water.
I've also seen people that have used construction paper, black trash bags, and even some cloth and velcro strips!
What other ideas do you have??
I'm weary on the construction paper as I'm sure it'd get wet very easily, but all the others seem like good ideas.