Brian, been there, done that. Asked "Are you a Purina dealer?" Answer: "Yes, but we can only order certain products." Fish food is never among them. Special order. Cost plus shipping.
Purina itself is zero help.
If you guys say CC pellets have little or no effect on BG growth, then I am going to cease feeding.
We can't keep CC over winter in this neighborhood as nocturnal otters get them.