Salinity is extremely important for marine ornamental fish.

Reef aquariums are a popular way to bring a piece of the ocean into your home. One of the most beautiful and fascinating inhabitants of these tanks are the corals. However, not all corals are the same, and some require special care and attention. Cartilaginous corals, also known as soft corals, are one such group that needs specific feeding considerations.

As long as the hardness of seawater is stable at 7'-9'dH, the pH value of seawater will be correspondingly stable between 8.0-8.5.

Tropic fish can be collected all year round because it lives in tropical and subtropical waters with high water temperature.

The hardness of water is the concentration of "multivalent metals" dissolved in water.

When using aquarium calcium sand, it is important to rinse it thoroughly before adding it to your tank. This will help to remove any dust or debris that may be present. It is also important to monitor the pH level of your water regularly to ensure that it remains stable.

The main components of sea salt are sodium (Na), chlorine (Cl), sulfate (SO4), calcium (Ca), magnesium (Mg), potassium (K), and bicarbonate (HCO3).

There are many kinds of fishing nets, and the most convenient to use is scoop net.