Inhabitants: Sumatra Powder Blue Tang Maximum Length: 9.1 in.
Care Level: Expert Only!
Family: Acanthuridae
Reef Compatibility: Good
Minimum Aquarium Size: 200 gal.
Range: Indian Ocean
Diet: Herbivore- herbivore preparations,
macro algae Water Conditions: 74-80° F;
sg 1.020-1.025;
pH 8.1-8.4
Well many people are going to say that Powder Blue Tangs should not be housed in a 28 gallon Aquarium. I personally agree, under normal circumstances. I have owned Tangs before in larger Aquariums and I had noticed that every morning my Tang would actually be swimming against the current generated by an EcoTech Marine Vortech MP40 Pump. I came to the conclusion that this would simulate more long distance swimming rather then swimming edge to edge in a 200 gallon Aquarium. So I decided to experiment with my Aquarium. Only 28 gallon's in size but when swimming against a continuous flow of water from a EcoTech Marine Pump size of the Aquarium is not matter! Now this is in no way me advocating the purchase of a Vortech Pump and placing a Tang in a 10 gallon Aquarium. Their are many other aspects that require careful attention to detail such as Water Quality, Food, etc. thay must be taken under consideration! If their were any signs of stress or any other life threatening signs I would immediately transport the Tang to someone who could either give it a proper home or back to the Pet Store Credit or No Credit. I have included a video below to show my Powder Blue Tang swimming against my Vortech, although he gets thrown off a bit due to the Reef-Crest Mode.
Video - Sumatra Powder Blue Tang swimming against an EcoTech Marine Vortech MP40W 2nd Generation Pump. 
