Pumice stone is a new substrate that can be used as substitute of coral reef. It has spongy appearance but durable. The stone is not as breakable as coral reef and has long life duration. Pumice stone is light-weighted and easy to clean. It can help control water’s PH, either the water has high or low PH, the pumice stone will control water’s PH to be around 7.0. This will keep the water in good quality and result in better health for your beloved fish.

Because of its light-weight, user should soak pumice stone in water around one night before use. This will make the stone to be able to sink in the pond’s filter area. If you need to use it urgently, you can put something on top of the stone to help it sink in. After a while the stones will absorb enough water to be able to sink. In order to clean pumice stone, user should clean it with water but don’t dry it up with sun light. The heat will kill all microorganisms that help cleaning fish’s waste.