Feature: 1. Water softening resin is a special resin specially used to soften hard water. Through ion exchange technology, the hardness of water is less than 50 mg/L. 2. The soft water resin can effectively soften and adjust the water quality, so that the water in the aquarium can meet better growth requirements. 3. High-quality resin filter material, suitable for a wide range of environments, can be used in seawater and fresh water. 4. It has the three-in-one functions of filtration, bacteria enhancement and water purification, stabilizes the water environment, and quickly cultivates nitrifying bacteria. 5. Equipped with a fine mesh filter screen, put the water softening resin together with the filter screen in the filter box to achieve a better water softening effect. Specification: Item Type: Soft Water Resin Material: Resin Product Color: As Pictures Shown Volume: 500ml/ Box Resin Diameter: Approx 1mm /0.04 in Product Weight: Approx. 378.0gProduct use: Aquarium filter Principle of resin softening: Resin softening water quality is a water treatment method that uses ion exchange water treatment to make the exchangeable ions in the resin and the aqueous solution produce reversible exchange that meets the quantity rules of other substances, resulting in improved water quality without chemical changes in the structure of the exchanger. In this water treatment method, only cations are involved in the exchange reaction, called cation exchange water treatment; only anions are involved in the exchange reaction, called anion exchange water treatment; both cations and anions are involved in the exchange reaction, called cation and anion exchange water deal with. Due to the difference in the water quality of the raw water, different types of fish tanks such as fish farming, aquaculture, and coral farming have different requirements for water quality, and the softness and hardness of the water quality need to be adjusted according to actual needs.Tips: When the water softening resin replaces a certain amount of hardness ions such as calcium and magnesium in the raw water, the regeneration effect becomes worse, and the resin regeneration method is required to re-enhance the replacement characteristics of the resin. Resin regeneration method: 1. Take out the soft water resin and wash it with tap water first, add 100g salt to 1 kg of tap water, soak the resin in the salt solution for 30-60 minutes, until the resin returns to its original color. 2. Rinse with tap water for 5-10 minutes to remove the salt. . Package List: 1 Box Filter1 x Filter Screen Note: It is recommended to clean and regenerate the resin every 2 months, and replace it with a new one after 3 regenerations to achieve a more effective water softening effect.