Euphyillia Not Growing at All

[Erich01]

I have a tank that's about 6 months old. I have several montipora doing great and coralline algae starting to grow on rock. However, none of my hammers are growing. Does anyone have any ideas as to why this might be?

 

[Dburr1014]

I have a tank that's about 6 months old. I have several montipora doing great and coralline algae starting to grow on rock. However, none of my hammers are growing. Does anyone have any ideas as to why this might be?

https://www.reef2reef.com/threads/hammer-coral-not-growing.905395/