Bottom sand is the thing that mainly controls the hardness and ph value of water. Different fish have different requirements on the color of bottom sand, and it is easy to develop color if the color is suitable.
Fish tank, a kind of water tank for live fish, has a transparent cylinder, mostly made of glass, and can also be used to raise tropical fish or goldfish for viewing.
The fish tank is not only the home of fish, but also the enjoyment of family life. The flawless double-layer float glass not only creates a warm home for fish, but also ensures the safety of the overall living environment. Fish tank is an indispensable ornament in home geomantic omen, which is perfectly combined with space and is the soul Zen master in home, office and commercial space.
Aquarium, also known as aquarium or aquarium, is a container for raising aquatic animals and plants for ornamental purposes. This is an animal feeding area, and usually at least one side is made of transparent glass and high-strength plastic. Plants and animals living in water (usually fish, but also invertebrates, amphibians, marine mammals or reptiles) are artificially raised in aquariums. Aquaculture is also one of the popular hobbies all over the world, with about 60 million lovers all over the world.
reference data
Baidu encyclopedia-fish tank