YEE Natural Volcanic Rock Aquarium Filter Media, 500G Fish Tank Filtering, Cultivating Nitryfying Bacteria | Removes Harmful Substances | Activated Water Health
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The rough surface allows fast attach of culture bacteria and microbial membrane does not fall off easily upon rinsing or washing. - Cause ions activation in the water, increase the oxygen ions content.
- The volcanic rock has low resistance to water flow, it does not cause blockage.
- Allow culture of digestive bacteria (nitrifying bacteria)
- Adsorption harmful bacteria, and heavy metals such as chromium and arsenic.
- Stabilize the water pH value, provides water filtration and water quality control.
- The red color of volcanic rocks will induce red color of the fish gradually.