Biological filter material which is degraded by bacteria to remove algae-promoting nitrate from freshwater and marine water Just add filter material to internal or external filter and only refill when it has been degraded by the bacteria after approx. 6 month Bacteria settle on the bio balls and form a thick biofilm. Underneath the oxygen level drops, so that the bacteria there can remove oxygen from the nitrate and thus degrade it Water stabilising effect: since pH decreasing acids are created during the bacterial degradation processes, the bio balls contain acid binding minerals to stabilise the water Package contents: 100 bio balls for the nitrate breakdown in 200-300 litres aquarium water; 1 ball / 2-3 litres of water.
Combatting algae naturally: Nitrates and phosphates are main nutrients for algae. When one or both nutrients are withdrawn from the water, the algae stop growing! However, bacteria only break down nitrate under specific conditions: Only when there is no longer any oxygen, and a carbon source (a nutrient for bacteria) is available do the bacteria remove the oxygen from the nitrate, thus breaking it down.
That’s how JBL BioNitratEx works: Bacteria settle on the surface of the JBL BioNitratEx bio balls within about 4 weeks and form a thick biofilm. Beneath the biofilm a low-oxygen zone forms, in which the bacteria start the denitrification process to degrade the algae-promoting nitrate (NO3). The bio balls serve as food and the nitrate serves as oxygen supplier for the bacteria. That’s why the bio balls become smaller as time goes by (easy to check visually) and disappear completely. This takes about 6-12 months, depending on the nitrate pollution. Then you need to replace the bio balls.