Glass aquariums do not come seamless... All seamless aquariums are acrylic. Speaking in terms of standard manufacturing...

Seamless glass simply isn't practical to make, nor cost effective...

There is ONE company which makes seamless glass aquariums... hope you're prepared to pay out the nose for them, though. You could buy a dozen from the store for the price of ONE of their custom made ones... I've provided the link for you, though...

Here is a link that might be useful: 4FishTank

I came across one on ebay, it was an antique aquarium (the ad said). But it was about $100 for a 1 gallon.

I know a seamless glass cube will be rather expensive. However, if i want a very modern aesthetic, I'll have to bit the bullet.

Thank you so much for the hints.

If anyone has any other suggestion, I would be most grateful.

For example, has anyone seen any LARGE square vases that could serve as a aquarium/terrarium?

Found a site that sells it. Check LiveWithNature.net out for seamless glass aquarium.

Here is a link that might be useful: www.livewithnature.net

Cool!

However, everyone should know that these are available (at much lower prices) as vases at craft and flower stores.

Love their other products!!

Jeff