Pssopp Aquarium Crystal Bio-Chem Internal Filter Replacement Fish Tank Activated Carbon Filter Cartridges For Xp-05 09 11 13 Or Xp-03 03B(Xp-05 09 11)

Makes Water CleanHigh efficient filter to removes debris colors and odors makes water clean and crystal clear. Easy to InstallQuick and easy to install no tools required for freshwater saltwater andaquariums. Perfect ReplacementFit for XP-05 09 11 13 or XP-03 03B (Optional). Perfect replacement for the original replacement. High EfficientContains a unique superior activated carbon and Cotton blend that removes compounds 3x more effectively than carbon alone. Pay AttentionUse when starting or maintaining an aquarium replace monthly or sooner if aquarium is heavily stock or colors and odors are detected.