I was told that Goni's don't need to eat or don't eat. I forget exactly what was said. I did try feeding my goni one time but didn't notice any kind of reaction. It doesn't look like it was eating.
there is a solid total gardens video on feeding gonis. It will probably work given the wide variety of plankton size. It would just be a lot of reef chili. Honest I have thought about mixing up the reef chili combo myself without the spirlina so I could feed more of it. One of the brine shrimp companies sells all the components in bulk but i would have a 30x lifetime supply lol.