After the heron visited the other day the Koi were spooked and would not come up for food, at least not while I was standing there. I had purchased Hikari floating pellets which eventually would end up in my skimmer since the fish would not come up to eat. I figured out that if you squeeze them once soaked in water a few minutes you can remove enough air in the pellet to make it sink. You can also crush the pellets so that smaller chunks sink to the bottom.
When doing this however you should make sure the fish are eating at the bottom. The food develops a mold like substance that can be harmful. Also the extra proteins foul your pond and provide food for algae or cause other water quality problems. Drop them near your bottom drain so it can pull out uneaten food.
