FWIW, here's my feed test. I fed the same amount of feed to 3 different groups of HBG in 3 different cages. Same number of fish, same size in each cage. This is 3 months of growth. Fish were 2" when the test was started. I didn't weigh the feed, I just fed them a small coffee can per day, split into 2 feedings.

Top one Sportsmans Choice
Middle Aquamax 500
Bottom Optimal BG Jr.

That was enough for me, but the other thing that I saw was the first year feeding Optimal vs feeding Purina was about a 50% reduction in FA in the pond. Could that be attributed to the year to year conditions? Maybe but I don't think so.

What year was the test done? I can't remember, but I do know it was before Optimal BG Jr. was out on the market. wink grin

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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).