Just stocked my 1/2 acre pond 2 weeks ago, with 150 CC, 300 CNBG and 1500 FHM. This past weekend while working around the pond, I noticed 2 dead CC floating in the pond, is this normal to lose some fish? Also, the day the pond was stocked we had a huge amount of rain in a very short period of time. The pond overflowed through the spillway and I lost some FHM. Not sure how many, but the drainage ditch the pond overflows to is full of FHM. Should I add more FHM?