I am in need of some creative advice, I have a tiki tank and I think it's a terrarium but I don't know. The guy I got it from said he kept fresh water fish in it for 5 years with no issues. I know the smart thing to do is measure the thickness of the glass to see if it's an aquarium or a terrarium....but it's encased in the tiki hut and so I can't measure the thickness of the glass. Does anyone know of a way around this? I will try to post a picture in-case that helps... Thank you all in advance!