Juwel Aquarium Standard 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 Standard Nitrate Sponge in your Juwel filter.

Juwel Aquarium Standard Nitrate Sponge measurements: 12.5 x 12.5 x 5 cm