Well, finally took a few minutes to progress with this project.
These are the basics of the aquarium itself. I have an eight inch cast acrylic cylinder (12 inches tall) and a piece of Polycast cast acrylic 1/4 inch thick for the base.
The glue to be used. I highly recommend the use of No. 4 over No. 3.
First, I raised the protective wrap enough so that it wouldn't impede the glue.
I typically use thin wire to slightly lift the piece so that the glue can cover the whole edge. However, I couldn't find it. So, improvise. Yes, it's a staple.
This is a picture of the pieces glued. Sorry, couldn't take a picture and glue at the same time.
And, finally, the piece drying. That's 10 pounds weighing the piece down.
I give it two days to set well. Will update on the next steps.