Hi, I want to make a custom background for my new vivarium, and it's my first ever time doing it. The problem I'm facing as I research what to do is I get so many different and conflicting sources of information. I see people saying to or not to put silicone on the glass first, people saying to not use the black pond GS foam, some people saying to use an egg crate to secure the GS?? I just want to know what is the best method for making this background. Silicone on the glass first or simply spray the GS directly to the glass? If sprayed directly on the glass, do I use the yellowish tan GS or the black kind? Thanks in advance to any information!