Editing Foam Background Guide (section)

=== Recommended: ===

* Cork bark: Can be adhered directly to expanding foam to create texture or ledges.
* Other branches / hardscape: Wood and other hardscape can add habitable space for plants and animals, and aesthetically adds depth.
* Vacuum cleaner: To clean up tiny bits of foam, and substrate.

<nowiki>*</nowiki> There is some debate within the community over the safety/purity of GE Silicone 1. Aquarium-grade silicone is strongly recommended. 

Pro Tip: We strongly recommend buying all supplies before you begin, and buying more than you think you'll need (unless you live across the street from a hardware store). It's not fun to spend half your project time driving back and forth from the store to get more supplies! You can usually return what you don't use later.