JBL Aqua Aquarium filter accessory jbl bionitratex (x100)

Biological filter material, degrades bacteria, eliminates nitrates that promote algae growth in freshwater or seawater. Simply place the filter material in the indoor or outdoor filter, and replace it only after about 6 months, once it has been degraded by bacteria. Bioballs are colonized by bacteria that form a thick biofilm. Underneath this biofilm, the oxygen content drops to such a degree point that the bacteria present will extract the oxygen from the nitrates, thereby eliminating them. Stabilizing effect on water: as bacterial degradation processes generate acids that lower pH, bioballs contain acid-binding minerals to stabilize water.