I'm not saying all fish are the same. I once was at a customers place where he exclusively fed Aquamax 500. The fish absolutely would NOT eat Aquamax 600. No way, No how. These were 2# HBG. They'd pick a single AM 500 pellet from the water that was floating right next to an AM 600 pellet.

When I switched from AM to Optimal (now Endurance) I mixed it 50/50 in the feeder for 80# then just went straight to Optimal.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).