ECO-Aqualizer^TM accomplishes such Healthy benefits by applying continuous ionizing pulses  geared toward the collapse of water molecules.  This collapsing of H2O molecules allows Oxygen atoms  to become super saturated and exhibit much greater bio-availability.  This in turn, can be absorbed MORE easily and MORE effectively by tank inhabitants. 

With increased Oxygen BIO-availability, both in the water and in fishes bodies, your tank inhabitants will expend LESS energy in just staying alive and being LESS stressed.  With reserve energy to be more active - more reproductive - and more enjoyable to their owners. Greater reserve energy ensures that fish will remain healthy by enabling Osmoregulation to better control the concentration of body fluids and more successfully regulate osmosis.  

Fish breathe by taking in water through their gills.  They have a Blood Capillary system within their gills that absorbs as much Oxygen as it can from the flowing water.  ECO-Aqualizer^TM frees-up the Oxygen atom availability allowing greater dissolved Oxygen that fish can more easily uptake and efficiently utilize.  With Oxygen being freed-up, fish can can absorb a much greater content with less of their energy actually being used.  This allows their immune system to stay very strong.  Even the Oxygen that carries the red blood cells of fishes' become more efficient which prevents breakdown of the immunoglobin antibody.  This helps to drastically boosts immunities while maintaining greater energy reserve and preserving osmoregulation.

Hence, diseases can not attack fish very easily.  And if they do, fish can and will naturally beat it.  Also, fish will stay livelier, more active, grow faster, maintain brighter colors, but most importantly, remain LESS STRESSED and happier.