Thank you.
I used glass because I don't have the ability to perfectly cut acrylic with square enough edges to use the acrylic glue, and silicone produces a weak connection on acrylic. So glass was easier and more reliable.
It will also never sag jeopardizing the walls of my tank stand. , which could be an issue over time with acrylic.
I'm really happy with the way it came out. Tomorrow night I can start testing it.