New Reefer
Hi guys, I just want to make sure if my Duncan is growing a new head.
Previously it's doing pretty good and fully extended (at least IMO).
However, about five days ago it's not extending fully (occasionally it does but not lasts long).

LIght: AI PRIME 16HD using David Saxby setting running an acclimation mode
Water para:
0 Ammonia
0 Nitrite
Nitrate undetectable
PO4 undetectable
PH: 8.0
CAL: Around 400 ppm
I am using the API test kit so the values are not accurate.

Thank you in advance!


in the coral sea...
Manhattan Reefs
Real Reefer
Union Square, NY
Possibly, but it doesn't really cause them to retract all the time, they just sort of bud out the side or they split as they grow out.


Advanced Reefer
Manhattan Reefs
Bellmore, NY
I have duncans that started to close up like that. It might be worth a dip. There could be a pest irritating it and causing it to close up. Worth a try since I went from one polyp to 10 since then. I do feed reefroids about once per week too. Hope that helps you out! Good luck!

Jean estevez

Experienced Reefer
This is my duncan growing new heads For reference


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