Thx for the replies guys.
No dead fish at all today, hopefully it stops and my trout become more active (assuming they are alive).
I plan on getting a water test done next week. Will be good to know regardless what the makeup of my pond water is.
As for feed, I bought the trout feed from the same place that supplied the fish. They are 5mm floating pellets made by a company call ProForm. I was told by the supplier that my RBT were just in the process of graduating from 4mm to 5mm pellets.
Also, there are no other forage fish in the pond. No minnows of any kind.