With adding the 3 new koi expect the pond in 3 years to have even more or at least as much frequent turbidity especially if you are aerating the pond which creates more circulation to keep suspended particulates in the water column and not let them settle as well. Good wind action also helps keep suspended particles in the water column. With those fish your pond should not have a significant FA problems; no light for it to grow..
Last edited by Bill Cody; 04/03/21 08:18 PM.
