Hi,
I normally don't act as one of the "fish police", but I wanted to offer you my opinion here because of some unique issues. Most people who buy a black tip keep it in a smaller tank - it soon outgrows it and they have to find a new home for it while it is still reasonably small and easily transported. In a 2500 gallon tank, it will be able to grow much larger before you need to find a new home for it. The problem is then that when it does come time to move it, the odds of you being sucessful (unless you live right next door to a public aquarium) is going to be close to zero. I've kept a female BT in a 6000 gallon tank for 17 years at a small public aquairum. Luckily her growth slowed way down because she is right at the cusp of outgrowing that tank, and has long since outgrown my ability to transport here anywhere safely.
FWIW, here is a section on BTs from my Advanced Marine Aquarium Techniques book:
Pacific Black Tip Shark Carcharinus melanopterus Carcharhinidae
Occasionally imported from Indonesia, this species is simply not suitable for home aquariums. While 14รยขรขโยฌรย juveniles can be housed in round aquariums as small as 300 gallons, they do not stay that size for long. As adults at perhaps five feet long, they require a full 5000 gallons of unobstructed, round-sided swimming space. They are prone to developing goiter, and usually require iodine additions to their diet to combat this problem. Not commonly known, most pelagic carcharhinid sharks such as these periodically push out their spiral valve (equivalent to their large intestine) into the water in order to rinse off any indigestible material that might be present. This act takes just a few seconds and always happens at night, so is rarely observed. However, when kept in small aquariums with other sharks, it does happen that a nearby shark will nip at the exposed tissue. When the shark retracts the now damaged intestinal material back inside their body, they may look normal, but they have been mortally wounded and may soon die from peritonitis.
Jay Hemdal