A new way to control biological activity in your swimming pool without using chemicals. Healthier to you, savings in chemicals, savings in time and easy pool management. Take a look at the full article and please contact me any where in the world if you would like to set up a similar system in your pool. Waterdoc Limited is continuing to use this technology to improve water supplies without the use of nasty biocides - other arcticles include the use of this technology for Gold fish ponds to industrial cooling towers. Biofilms are slowly destroyed and water treated with this technology has downstream effects to clean up and remove algae. This will change the face of water treatment in the years to come.