What is the effect of UV light and UV filters of Pond Wizard?
It is widely accepted that ultra violet light from the sky does destroy bacteria. In order to protect the bacteria in Pond Wizard, we recommend that the solution of the product be applied to the pond in the evening, during low daylight levels followed by a period of darkness. We also recommended that UV filters be turned off as the UV light from them again could affect the efficacy of the product. However, we now believe that UV filters can be left on as the intensity of the emitted light is generally not enough to kill bacteria. UV lights are primarily used to agglomerate algae bloom, the clumps of which are caught up in the physical filter. Pond Wizard removes the nutrients on which both blanketweed and algae bloom live, so there should be no need to use a UV filter once the nitrate levels have been taken to zero. It is still advisable to apply the product to the pond in the evening as the intensity of UV from daylight, even on bright cloudy is considerably greater than the UV from p
