Koi feeding activities of rooting in the sediments for invertebrate foods does create suspended sediment which causes natural water turbidity and less sunlight penetration AND less phytoplankton AND less FA growth. Both need sunlight to grow. Pros and Cons. Amount of suspended sediment is dependent on several factors, main ones are 1. size of koi (bigger ones make more suspended sediment per fish, 2. number of koi (more numbers makes more turbidity, koi recruitment plays a big role), 3. Koi have no stomach, just intestine, thus they do not binge feed like sportfish. Koi, to keep food moving through the intestine, spend a lot of their time looking for food in the sediments.3. amount of aeration - the more aeration and faster the pond turnover the more the sediment says suspended, 4. wind action and fetch(pond shape and long axis as it relates to prevailing winds). 5. The larger the waves and more frequent they occur the more the sediment stays suspended. If the pond in later years, as koi grow large, has low clarity with soil hue/color then you will know one of the main reasons.
Last edited by Bill Cody; 04/02/21 06:56 PM.
