These are my latest pictures of my Koi, ive just had to treat my koi with parasite and bacterial treatment and now my fish are fully vibrant, my new members have settled in well and nitrate levels are finally decreasing, probably since i added oxygenating plants. I am currently using tetra health and colour enhancing food at the minute, its the most reasonabilist on the market at 14.95 for a large box from the 'Range' store