Hi guys. I am looking for recommendations on the easiest, low-cost black background you can put on your tank (that isn't paint!) and how to do so. Thanks in advance!
I use vinyl similar to what a sign shop uses. Not the cheapest as it costs about 15 dollars for enough for a 48x20 tank. It looks like paint when viewed through the water and has the benefit of being able to change. I recently changed from dark green to navy blue.