Our koi are all quarantined for between 4 and 8 weeks on our premises and we do not release any new fish earlier than this unless our customers can demonstrate that they have adequate quarantine facilities Our aim has always been to supply high quality koi at 'sensible' prices, and to achieve this we travel to Japan at least twice a year to select our stocks from reputable breeders all over Japan We would recommend leaving your UV in place if you are using dry air as an input gas, although for most of the year you wont need it Whilst not a Utopia, since even with the use of Ozone koi can still need individual medication and treatment if required, the other major advantage of Ozone in our pond systems is that it virtually eliminates the risk of cross infection between koi In addition we offer a pond design and construction service and provide advice on all areas of filtration