For all the reasons Wayne clearly stated above, a QT can be nothing but highly recommended.
I personally will be setting one up before I make any more purchases. I would be gutted if I lost my blue faced angel due to anything a QT could've prevented - though it would be like me to have to learn the hard way.
As for size, either a 10 or 20 gallon. I'm sure a 20 would be better all around, apart from the extra space it'll occupy in my 2 bedroom apartment. My home has turned into enough of a jungle as it is, what with my aquarium that dominates the lounge, my wifes bearded dragon, a bengal and 2 other domestic cats.
__________________ 90G Tall Fish Only SW (+10G Sump)
- Bluefaced Angel, Bicoloured Angel, Maroon Clown, Yellow Tang, Cleaner Wrasse, Scooter Blenny.
- Skarlet Skunk Cleaner Shrimp, Orange Spotted Purple Star, Green Brittle Star, Longspine Urchin, Bubbletip Anenome, Condy Anenome, Emerald Crab. |