i feed my hermits and snails those dried algea flakes that are 3x4 in leangth. just tie it to a snall rock and in 5 minuits all of your hermis and snails will be all over... i do it like once a month since i dont have really any algea.unless you have fish that will eat it first. you'd think my tang would eat it, but he alwase spits it out, its like its to hard for him to swallow. idk maby when he getts bigger