How to Make a Lobster Tank

Clean the aquarium fully with fresh water and allow it to dry upside down, removing any dirt or sediment on the inside of the aquarium.

Fill the tank with clean (chlorine free) fresh water and allow it to sit for a few seconds to make sure no sediment is visible in the water.

Mix aquarium salts or limestone flour -- both available from aquarium supply stores -- into the water to make it harder and more like the ocean water in which lobsters live. Follow the indications on the salts or limestone flour carefully to achieve the desired ocean water concentration in the amount of water in your aquarium.

Install the filter pump in the corner of the aquarium, making sure the intake is placed under the water level in the tank and is able to function. Plug the filter in and verify that it works correctly.

Heat the water in the aquarium with an aquarium lamp to 72 degrees Fahrenheit. Install a thermometer in the corner of the aquarium in order to verify that the temperature remains constant and adjust the lamp as necessary to alter the temperature.

Place rocks and PVC tubes along the floor of the aquarium after washing them carefully. Every lobster should have at least one PVC tube to use as shelter in order to avoid fights.

Test the pH of the habitat with pH paper. Insert a small piece of pH paper and compare the color change with the pH key. If the salts have been correctly mixed, the pH should be about 7.3.

Introduce all of the lobsters into the new habitat all at once to avoid fights for space. Feed the lobsters regularly to avoid competition for food that could also result in fights.