The biggest benefit of medical stone is to stabilize water quality. With it, the water body can become clearer and the water change time can be extended. In addition, medical stone can release trace elements and minerals and properly adjust the hardness of the water, which is also very helpful to the health of fish. 1. Benefits of using medical stone for fish tanks

1. Stable water quality: The biggest benefit of medical stone is to stabilize the water quality. With it, the water body can become clearer and the water change time can be extended. time. In addition, medical stone can release trace elements and minerals and properly adjust the hardness of the water, which is also very helpful to the health of fish.

2. Adsorption of harmful substances: Medical stone itself can adsorb some harmful substances, such as cadmium, mercury, arsenic, lead, etc., and can also adsorb harmful bacteria. The adsorption rate of E. coli can even reach 95, thereby reducing the possibility of fish disease, very suitable for placing in fish tanks. 2. Disadvantages of using medical stone for fish tanks

1. Sulfur-containing elements: medical stone itself is a volcanic rock, and during the volcanic eruption it absorbs various minerals, including some Some harmful ones, such as sulfur, will evaporate slowly when exposed to water and may even produce odors, so placing them in a fish tank is risky.

2. Release harmful substances: It is true that medical stone itself has adsorption capacity, but there is an upper limit to adsorption. Once it reaches saturation, it will no longer adsorb, but will release these substances. If it comes out, it will be very harmful to the health of the fish. Therefore, it usually needs to be replaced after half a year and cannot be used all the time.