The best backgrounds are the cork tile backgrounds made by ZooMed. They're cut to fit the ZooMed and ExoTerra vivs and they look really good. You can also mount vines and bromeliads to them.
As for cleaning, the vivarium is pretty self-contained. Once a month I use a paper towel to wipe down the glass surfaces. This is pretty easy with the ExoTerra vivs. When you open the front doors the frogs tend to hide in the back while you clean and this cuts down on escapees.
I also drain the water from the false bottom when it get to about 1/2 inch from the substrate so the water isn't wicked back up into the substrate. To do this I insert a bit of tubing (3/8" diameter I believe) that I got a Lowe's that just accomodates a length of fish tank airline hose. I insert this tubing when I set up the viv and cut it off just slightly above the substrate level. You can hide what shows with a little leaf litter. Then when you want to siphon the water just insert the airline hose into the tubing and siphon out the water.
If you use the proper substrate such as ABG mix, then you shouldn't have to break down the viv for around five years. At this time, the substrate may have compacted and broken down so that it no longer drains properly. You can then just take things out down to the substrate divider and add new substrate.
Photos of a couple of vivs when just completed and not yet grown in and an adult azureus.





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