you can also buy the SF Bay packets...they are also a big chunk of money in the long run but are good for the person not wanting to raise them by the mass. I use them for starting fry since they are usually a lil smaller than normal bbs....you place packet in water, cover, place cup thingy on top. then set it and forget it (j/k that was that infomercial phrase) but for real you just come back to it a day or so later and there should be a bunch that swam up in the top cup you can just dump into the tank. We have a nightlight above our lil hatchery so we dont have to leave a light on all night to draw them up
Garrett B.