Posted: 24/04/2012 at 16:24
I can understand why you had the idea and can picture how attractive it would look when first planted up however..
Presumably an aquarium is made of toughened glass but not designed for outdoors so I don't know how it would stand up to conditions in your garden.
Even if painted it would get extremely hot in sunshine, the water could boil!
Most container ponds are solid and opaque, you can easily convert any big pot as a water feature, a pond book from the library will tell you how.
As for the wildlife, there is a danger of creatures falling in your aquarium and not getting out, creating an escape for them would be difficult.
Even a small sunken pond would attract all sorts, frogs, dragonflies and birds for a drink so I would strongly encourage you to investigate other possibilities.
You could make an ant farm in your aquarium!