Regardless of what kind of tank you opt for consider this. If you are medicating your fish, hence the reason their in the hospital tank
, then you're most likely using medications that treat bacterial infections. If so, then your bio-filtration will be rendered useless since it will get killed along with the "bad" bacteria. A simpler and cheaper way to go is a glass tank with a sponge filter and a small pump. The sponge filter can be seeded with tank water -- assuming it's not contaminated -- and the only other thing you'll need is a heater. You can typically get all of these items for much less than the cost of an eclipse system.