B.Meister, I'm currently using Aquamax 500. Don't know if that fit's the protein % you're referring too?
FWIW, it took a long while just to get the BG to feed. They weren't interested in the feed for quite a while. Still not swarming like I've see in video's, either, but they are finally feeding.
Hoping the bass might just be alittle pokier in getting on board with the program.

on edit: Actually, just glad to see they're still there.