Now many people are using fiber balls for water treatment. Why is sand replaced? The reason is that the volume of sand is large, the weight is large, the filtering effect is not good, and in the process of using, the cost of manual handling is also high, so the sand is constantly being replaced. Now the fiber ball has become a common medium for water treatment, because of its light weight, backwashing, high filtration accuracy and no residual sand in the pool, it is used by more and more people.

That's why sand is replaced by filter balls.