Hi all! Just bought a 40 gallon breeder. Looks like the glass is about 5-6mm thick and the tank was shown completely filled with water in the listing. I was looking at the inside edges and the rim and am a little skeptical. It doesn't look like it is a one piece rim, and there isn't any silicone strip on the inside like I normally see with rimmed tanks. Only the bond between the glass panes. Otherwise it looks in good conditionc ondi this tank look safe to use? Sorry about the bad pictures, taking a good shot of the glass seam is harder than I thought.