Before I got my brigs, I would feed a single pellet to 15 cherry shrimp every other day and no one starved. That was in a mature tank though, plenty of other things to graze on. Since you only have 6 shrimp I'd guess they might not even finish the chunk of pellet you gave them, at least not for quite awhile.
as far as copper most likely it in trace amounts that won't kill your shrimp. Besides I hate to think Hikari, a well-known brand, would screw up so badly in making an invert food that kills inverts
Sometimes I'll toss in some hikari sinking algae wafers for my shrimp, too, they seem okay with it.
Good luck on the paper
as far as copper most likely it in trace amounts that won't kill your shrimp. Besides I hate to think Hikari, a well-known brand, would screw up so badly in making an invert food that kills inverts

Good luck on the paper
