Sure, if the filtration, temperature, etc equipment all works then yeh, they can do very well and live good lives in an environment that they certainly didnt evolve to be in. But the fact that they are depending on that proper functioning equipment to live is by definition life support. When I go scuba diving for 45 minutes and have gear that allows me to maintain my body temp, breath and see underwater then I am on life support in an aquatic environment that i couldnt otherwise be in. An aquarium is the same thing allowing fish to stay indoors.
We'll agree to disagree!
