what is needed for a saltwater aquarium
Steps. 1  1. Select a fish tank. Saltwater fish and plant life are accustomed to living in the vast space of the ocean. 2  2. Purchase the tank accessories. In addition to the tank, the aquarium will require a lid, a stand, a filter, a heater, an interior light, a thermometer and gravel for the bottom of the tank.
A 20-gallon tank is the minimum tank size for a reef or saltwater tank. Although it may be harder to maintain than a bigger tank, it is possible to create a saltwater tank using 20 gallons. Be mindful of the fish stocking to ensure that too many fish do not over-pollute the system.