Sealing method:

Place the plastic bucket containing seawater in a dark place and close the lid tightly. Maintain a certain temperature and let stand for three weeks. After three weeks, the water in the barrel will change due to the death and reproduction of plankton. In addition, the chemical and biological changes in seawater have gradually stabilized, and the initially generated ammonia gas has also disappeared. At this time, use the siphon to suck the dirt at the bottom. Inflate and oxygenate, adjust the water temperature, and then pour it into the aquarium tank, which is excellent natural seawater. The natural seawater obtained by this sealing method does not contain any harmful substances. Suitable for breeding all coral reef fish and invertebrates. Although this method takes a long time, it is simple and convenient and is still a better method to get natural seawater.