Filter insert with activated carbon for JBL internal filters of the CristalProfi i range.
Key Features:
• Clean and healthy water: activated carbon insert prevents water discolouration and odours, removes medication residues.
• To use: simply position the filter cartridge in the filter container instead of the filter sponge.
• Water-neutral, high-quality activated carbon which does not release phosphate into your aquarium water.
• Renew after about 2-3 weeks or immediately after the problem has been solved. Does not release bound problem substances back into the aquarium water.