Well you can defently get a 1000 gallon tank with stand lights filtration setup and everything for under 10 grand. and that tank would be sweet for some rays, bamboo sharks, and even small black tips. We have this same setup at the store i work at, but the problem is our blacktip reef shark is a female so she will grow to the full 7 feet. That and shes growing and eating everything so fast that we prolly wont be able to keep her much longer than another 6-8 months.
If you have the money then I say go for it, you will be the talk of the neighborhood.
If you have the money then I say go for it, you will be the talk of the neighborhood.