The link didn't work for me, but from what little I've read halimeda seems interesting. I'll have to look more into growing itAnyone new to salt water may want to play around with halimeda, just to gain experience. Its easy to grow, you only need a airstone and great nutrient exporter. In some of the high schools around here do a halimeda experiment and here is a link to directions.
www.hawaii.edu/.../pdfs/algae.aquarium.setup.highschool
Thanks! Nice article. Do saltwater pet shops usually carry it or do you usually have to buy it online?