Duncan coral acting up.

[Notsolostfish]

I have 2 duncans corals both in 120-130 par are. They are not stretching their tentacles anymore. They stretch up, but their tentacles dont come up at all and they look ugly. Nothing changed in my tank.

Mag: 1315:
Cal:415
Salinity:1.025
Phosphate: 0.05
Nitrate: 10
Alk: 7.5

I legit rented the par meter again to see whats going on. But i dont seem to get it. Why this is difficult than it should be?

 

[Eric Cohen Verified Sponsor]

Feeding regularly? Spot feeding? Could be adjusting to light changes, but Duncan typically aren't hard to keep growing......

 

[Notsolostfish]

Feeding regularly? Spot feeding? Could be adjusting to light changes, but Duncan typically aren't hard to keep growing......

I do feed regularly mysis shrimp

 

[Eric Cohen Verified Sponsor]

I do feed regularly mysis shrimp

Not sure that's the best choice, but there are other powder foods on the market that might work better. I have a food Duncan love called Coral Curry, but it's not that easy to find yet......I have small 4gram sizes cheap for testing.....you can contact me directly or if you have another food like Benepets you can try that too.