Juwel Aquarium Compact Nitrate Sponge is an ideal way to simply control nitrate levels within the aquarium which helps decrease algae growth.

Simply swap a blue foam for the Juwel Aquarium Compact Nitrate Sponge in your Juwel filter.

Juwel Aquarium Compact Nitrate Sponge measurements: 9.5 x 9.5 x 4.8 cm