Sorry to hear that it didn't make it, but I have to doubt that the combo has been together that long. I've grown silvers bigger than 14" in under 4 months. An 11" florida is likely around 1 year of age. 8" peacock bass is also not that old. Tinfoil and linma grownth I have found to be pretty variable. But my best guess would be that the combo has only been together maybe 3 months. And success with juvenile combos doe not guarantee success over time.