Scrapped the Dunaliella. The second batch didn't take off either. So, needing a pure salt phyto, I started two new cultures: Isocrysis Galbana and Tetraselmis. Ordered a fresh culture of Dunaliella and will start it when it arrives. Not really sure I want three pure salt cultures going at one time but will think that over when the time comes. Brackish setup will be ready.