This is a really hlepful article about setting up a small fish tank. The person actually knows both about caring for fish, and setting up an attractive looking aquarium. Spent 20 minutes looking through my internet history to find again. Pinning, so I don't lose it!
I made this background for my 120 gallon aquarium. It was actually pretty easy to make but it was very time consuming and messy. I'd definitely do it again though! It was a lot cheaper than buying a custom made background and you can make it exactly how you want it. This instructable will walk you through how to make one of these backgrounds. You can adapt this to any size tank. The materials I used are fish safe. ***Note: This is only for FRESHWATER aquarium use!!!