It may just be a factor of the frozen foods. Selcon is quite rich in fats. As far as garlic goes, its really a feeding stimulant for finicky fish more than anything else, but I doubt it really hits the lions target stimulation. He would go more for movement and vibration rather than scent. Then think about it...garlic has a smell and taste. Too much of anything is never a good thing, for you or for fish. I would try less additives at least one time and see. If that works, then again. You can always go back to the additives. Trouble is, you can't tell if there is too much of a good thing there or if there are traces of other chemicals that are less valued than the fats. A build up of anything beneficial will reverse the action and act against you. The shrimp and krill can wick up a lot of selcon under the carapace. Can you get a picture more of his belly underside and underside of his mouth?