API Water Softener Pillow is ideal to remove impurities, calcium, magnesium and heavy metal ions from the water. Use a test kit to determine the level of these unwanted elements and simply pop the Pillow in the filter.
It's ideal to use when setting up a new aquarium or performing routine maintenance. The treatment lasts around 48 hours, after that it can be recharged with aquarium salts. Place the Pillow in a solution of API Aquarium Salt (3 tbsps. to 7 oz. of tap water) for around 2 hours.
To use rinse the pouch in tap water, then place the Water Softener Pillow in the direct flow of water in the filter, this will expose as much water as possible to the treatment.
Size 5 pouch will suit 20 gallon/75 litre tank.