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Wow, persistant cats. How do you prevent the cats from getting to it the rest of the time then?

My cat used to open the tank lid to drink from it, but she never was interested in the fish.
Even when we had a pond she used to lounge around it but never tried to catch the fish. Thank fully she did try catching the small herron that got too interested.

I'd love to be able to put fish tanks in cat territory. But mine would have even the heaviest tank on the floor in seconds. I think they work as a team when they destroy the house.

I have a little 5 gallon biorb that my goldfish is in.
He's really small, but if he outgrows it he's got a home in our pond. I really like them. I have the round one in black in our living room.

I wouldn't wait too long with transferring him.
A small tank can stunt the growth of a large fish, unless you do very frequent water changes. And goldfish are schooling fish. They like company.

@Shanna66: Well I wouldn't put a gourami or betta in the zero edge, they are much too likely to jump ^^;

My garden (balcony pot) doesn't have snails, it has worms ^^
I think salamanders or frogs may also be nice for the garden one, it's a perfect solution for the island they need. Or fidler crabs!