birsdnest

First off, tank parameters: Salinity: 1.025 Temp: 78F PO4: 0.05 NO3: 13 Alk: 9 Cal: 410 Mag: 1250 The Birdsnest pictured below arrived 11 days ago. They both seem to have either brown algae or they are ejecting their zooxanthelle. Both are in strong flow and strong light. Acros beside them...