An aquarium with at least 29 gallons of water, an exterior power filter with a BIO-Wheel, a maximum of 1/4 inch of gravel, an aquarium heater adjusted to keep the water between 78 and 82 degrees F., and at least 1 Tablespoon of Aquarium Salt per each 5 gallons of aquarium water...White Tips enjoy each others company, so it's best to keep a group of them with at least four White Tips. In a couple of years four of them should grow to a size that will require at least a 75-gallon aquarium. If you are thinking about buying a White Tip Shark Cat, you should first realize that they should be kept in a group with at least four white Tips, and the four of them will eventually need a big aquarium.