The manufacturer informs:

ATI Easy Vital is a highly active natural clay mineral. Due to its extremely large surface area, it has a perticularly high absorption capacity; toxic substances and harmful organic metabolites are bound together and removed from the aquarium. The applications are countless, as you can well understand:

• detoxificationchlorine, heavy metals, copper, zinc, cadmium and residues of many other toxins are removed
  

• enhanced bioactivityReduction of biological inhibitors leads to a general improvement in polyps and subsequent coral growth
  
• reduction of nutrientsas a result of the binding of ammonium and ammonia, the formation of nutrients and nitrates is significantly reduced, thus improving fish health and limiting the occurrence of algae
  
• disease preventiongerms in the water are reduced and bacterial infections are thus neutralised
  
• water clarificationyellow substances, other dyes and phenols are removed