Hi I'm Was wondering what six feet tanks are out there. Does a 100 gallon 120 gallon come six feet long. Besides long is it ok to have a wide tank for tangs I read that they a minimum size is 100 gallons, I'm planning on a 150 gallon six feet long but not shore of weight my planning is still slow. And I need to see light size for a 150 gallon tank. Anyone can explain to me dimension. Cause I want stay with tank size for quite some time no upgrade for awhile and till I feel that I'm have knowledge of hobby.