So since I am now switching from GFC to Aquamax in a few weeks (they have to order my food) I need to decide what I want to feed so they can order so some help quickly would be nice.

Based on the fact that the size of the food is really the only difference in the two, what should I look for in my pond to determine the one to use?

Just a small recap of my pond to get an idea of the fish and sizes of them or should be in there.

My pond is maybe 1/4 acre.

Stocked with:
HBG
CC
LMB
RES
BC
FHM
GC

And let’s not forget the natural abundance of GSF.

Anyway back to what I want to know is should I use 500 or 600 and why do you think one is better than the other for my situation?

Should I consider 400 or would that be a waste of money?

Thanks