[SearunSimpson]

I believe spirulina actually comes from a seaweed of some sort. Yes, it is said to have magical powers on humans, though, i guess those magic stores are called health food stores and you can get it there too. Its sorta pricey though, for the pure stuff from health food stores, but it is good to add into your home made mix. It is used to colour up your fish usually though.

I wouldnt feed it to your fish exclusively still, except for fry:
Mix some in with some water, and make a paste, and slowly add more water. Use a pipette to squeeze into a fry tank. I know this works for a "first" food for a bit untill they are able to take larger foods.