I've been feeding (for the past 2 weeks) AM600 on a small pond. Even the 2" BG peck and push the larger pellet around until it's soft enough for them to eat it.

If GFC and AM are the same price, I'd stick with AM even tho the pellet size is larger. I wouldn't feed sinking food.

Pull the trigger and buy a bag. The longer that you wait, that's all the less that the fish will be eating.

www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).