- Effective culture bacteria glass ring, lighter than usual bacteria house / filter materials, improved water permeability, promote the fish metabolism and discharge of harmful substances in the body.
- Crystal clear, white and clean, does not pollute the water. - Remove harmful heavy metal elements in the water, provide a ideal place for nitrifying bacteria.
- Stablise water quality, especially water pH value and GH value.
Increase the amount of oxygen dissolved in water.
- Compact structure does not degrade easily, can be used for a long time