Are they fighting?
 

Hi guys
Beginner here. I've recently added an Open Brain coral next to my Alveopora and I noticed it has retracted abit / not extending as long as it usually does. Water parameters are stable, no changes except for the addition of the new coral. I've read that they do fight, would this br the case here? Are they too close to each other ?https://uploads.tapatalk-cdn.com/202...8d9ad6eaf7.jpg

Sent from my SM-N986B using Tapatalk

If you have about 4 inches in between the corals they should be ok. I would look at them after lights out to see any tentacles out toward each other specially the open brain