The active carbon sponge cleans the water of all chemical impurities by absorbing them in its active carbon. Consequently, these chemical impurities will not effect the bacteria - cultures inside the blue sponges. If the carbon sponge is left in the filter too long, it can release the chemicals again into the water. Consequently, we recommend replacing the carbon sponge every 4 weeks.

Suitable for RIO 240, VISION 260

You may also want to consider the other Juwel Standard Sponges in the related products below.