I haven't seen those, but if I'm not mistaken that site/business has excellent zoanthids and mud/sand fauna for sale right? I'm thinking garf grunge? If that was the place I was thinking of, it had dawned on me once to set up a seahorse system and continually replenish the aquarium with restocks of their 'grunge' or micro-arthropod arrays to keep the horses fed. I was hoping that a quarterly refreshment of reef bugs would be much more convenient than a continual artemia (brine shrimp) hatchery... just a brainstorm