Any ideas on why my rock nem and hammer aren't opening up all the way? I've had the nem for almost 2 weeks and the hammer for a month both were happy and thriving until I went on vacation for 5 days. I came home to an algae covered tank. Did a 30% water change and it still isn't happy. All other coral are doing great (blasto, mushroom, and acan). There have been no sudden changes in levels either. Lights are 2 ai hydra 32's on from 9am-10pm.
Temp- 78
Salinity- 1.025
pH- 8.2
Alk- 8.0
Calcium- 470
Phosphate- 0.06
Nitrates- 5ppm
Temp- 78
Salinity- 1.025
pH- 8.2
Alk- 8.0
Calcium- 470
Phosphate- 0.06
Nitrates- 5ppm