For an adult snapper no glass aquarium is going to be big enough unless you spend a ton of money. For the meantime though just get the largest aquarium you can afford. I have had several snappers ranging from sizes from 1-8 inches. I kept my largest in a 50gal rubbermaid container. I gave my little brother a common that I have had since it was a hatchling and its about 6in right now and its in a 40L. Hes doing great and is growing like a weed. Soon will need something bigger. Filtration wise... Get the best filter you can afford also. Snappers are dirty guys. I am using a Magnum 250 on the 40L right now and its doing a great job.

Good Luck,
-Chris
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Currently in the US Navy so I have sold off my collection. But over the years I have had dozens of turtles, fish, geckos, and other lizards. Cant wait to get back in the hobby once im out though!

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