no, but i do have two artemia hatcheries going. i feed artemia in the morning and at night, not to mention live rotifers and live phyto. every other day the frozen fish food includes coral frenzy and phyto a and b. also, with no skimmer and sunlight, the tank has a plankton bloom every night - not sure if it is phytoplankton, zooplankton or bacteria (or a combo of all), but the water gets a little cloudy every night. the one in that pic is the new one, but the other one in the tank has been in there about a year and has grown at least 1/2" on all branches.