You keep saltwater fish judging by your avatar correct? I will try to find a leopard shark for sale, and I'll put a photo of the blacktips on as well. Chatuchak is awesome for salt and freshwater fish keepers.Wow thanks for sharing that kok is crazy big!!
You would be amazed at the filtration they run on these tanks also, the basic filtration method for freshwater and saltwater is a overflow which flows on top of filter media (simple white cloth, usually seen in hang on the back filters without carbon literally just a simple white cloth) and back into the tank. This filtration is done on everything from stingrays to sharks, except on most saltwater tanks a protein skimmer is SOMETIMES included, yes only sometimes.