You no longer have to worry about whether your mixed salt water is similar to real seawater or not. Also, you no longer have to worry about whether your tap water is contaminated or not.

CaribSea Sea-Pure™ is real seawater that contains all the trace elements that are found naturally in the sea - in the right ratio and with the correct pH value. It contains no potentially harmful germs, no nitrate or phosphate, no organic pollutants, no artificial preservatives and no harmful chemicals. SeaPure™ is simply pure caribbean seawater as nature intended, purified and sterilized to the highest Standards. Booster bacteria pack included.