They are designed for softening hard water. The ion-exchange resin inside the Softenizer is stirred up with the outflowing water from the canister filter system. It effectively lowers the hardness of the water. Three sizes are available according to the size of the aquarium tank and the water quality. The appearance of working resin is beautiful visually and does not disturb aesthetic of the aquascape.

Contents /
Softenizer (with suction cup)
Ion-Exchange Resin (250ml)
Adapter
One-way cock
Silicone tube

Softenizer 20 : Aquarium tank 60cm in length or less / Water with lower total hardness
Softenizer 50 : Aquarium tank 60-90cm in length / Water with slightly high total hardness
Softenizer 300 : Aquarium tank 90cm in length and above / Water with high total hardness

Reusable refill of Ion-exchange resin for Softenizer. You can use this product repeatedly for a long period of time: for recovery, soak it into salt water. Please replace the resin once its surface becomes worn out and dried.

Necessary amount:
Softenizer 20 / approx 20ml
Softenizer 50 / approx 50ml
Softenizer 300 / approx 250ml

* Approximately 40ml of Resin is necessary to lower the hardness level by 1ºdH of every 100L of water.
* For recovering a 100ml of resin, mix in the water with 20g of salt, and leave it for about an hour. Then replace the water and remove salt.