Below is a journal of the construction of a vivarium using a 20 gallon high tank in the vertical position.
This tank will be used to house a pair of Dendrobates tinctorius – Bakhuis Mountain.
To begin, my first step was to ensure I had all the items I would require for the build.
This included the following materials:
Tank
Great Stuff Gap and Crack filler
GE Silicone II for Windows and Doors
Accent items IE: Wood, Cork Rounds, Potting Cups
The following tools were needed to begin:
Caulking Gun
Razor Blades
Knife
Wipe Out of similar cleaner IE: Vinegar or Bleach and Water mix
Disposable Rubber Gloves
Paper Towels
Patience
Here are a few pictures of the items used:

Before applying any Great Stuff foam or GE Silicone II, clean the glass to ensure no residue it on the glass that could cause the foam or silicone to not adhere properly. The glass looked very clean to start this build, but as you can see from the picture below, it definitely was not.
Once the glass was dry and I was ready to play with the foam and silicone, I placed the accent items in to find where I wanted them to end up. As you see from the following pictures, I cut the cork round into three sections as I also did with the wood.
The first piece of wood was attached with silicone and allowed to dry some before applying the Great Stuff foam.
I allowed this left side of the tank to cure for about two hours, then flipped the tank onto its back where I then placed my next accent items and and applied more great stuff foam. Once I was happy with accent locations and the amount of foam I applied, I allowed this to sit overnight to cure. Remember to attach the accent items with silicone first or the foam will move them around as the foam expands.
I will be trimming the foam and cutting in some cracks and ledges sometime later today which will be covered in the next post.