Handful Caulerpa serrulata, Live marine algaeCAULERPA SERRULATA MACRO ALGAE STARTER CULTURE FOR NATURAL REMOVAL OF NITRATES AND PHOSPHATES. THIS IS AN EXCELLENT TYPE OF CAULERPA AS IT IS VERY RARE TO TURN THE WATER MILKY, LIKE SOME OTHER FORMS OF MARINE ALGAE. THIS GROWS FAST AND IS VERY GOOD AT KEEPING YOUR NITRATE AND PHOSPHATE ULTRA LOW WHILST OUT COMPETING NUISANCE ALGAES IN THE AQUARIUM. This is a thick strain and high quality caulerpa serrulata. It does not break up like some other