Will using evoUV steriliser make my fish completely disease free?

No. The evoUV can only ever be effective on the water borne life stage of some disease
pathogens. It is not effective on any disease which is already on the fish’s body and does
not have a mobile, water borne life stage. evoUV can be effective at lowering numbers of
water borne pathogens and helping to prevent the spread of pathogens from tank to tank on
centralised fish systems, if set up correctly.
It can only ever be effective on pathogens which pass inside the unit, and are directly
exposed to the harmful UV rays emitted by the UV bulb. If this is the case, it can be a very
effective at lowering pathogen numbers.