08-12-2013, 09:40 PM
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From everything I've read, sharks need very large tanks with lots of room to move around in. While you may not need a tall tank (height-wise), you definitely need a long and fairly wide tank. Whatever you get needs to be wide enough that a fully-grown shark can comfortably turn around in.
You will most likely want to have a tank that a fully-grown shark can fit in right off the bat because the brownbanded bamboo shark can grow nearly a foot in one year if well-cared for.
Although you've read up on sharks, I still feel the need to say please, please, avoid nurse sharks. They get far too big to be kept in ANY home aquaria and euthanization or an uncomfortable, smothered death is often the end for these majestic animals.
EDIT: For building your own tank . . . you may want to check your yellow pages and look for glass workers near you. They may be able to make a tank to your specifications. Again, length is the most important, with width being next. Height is the least important but these fish do well in deeper and dimmer waters.