... - I highly suggest just using this black expanding foam. I have found it to be way easier than doing the concrete route. Here is a link: Aquarium Expanding Foam: ... This is a super awesome DIY aquarium backg
by HeyKayli
by Happy Toy Time
by DIY Crafts & Lifehacks
by Zacks Tanks Crazy Aquarium Guy
by ELLE España
by Timepass
by Creativity: My Passion