Just curious....were you using a boat or canoe for any of the fishing?? And, did you fish with live shiners or fatheads?
If catch rates were very low before your BG/RES/CC additions, the 400 + 400 + 150 will take a while to see in a 1 acre pond.
One thing that helps me see more fish at my ponds is feeding pellets. That helps attract them.