Duncan coral

[Jorge1717]

So I've been noticing for the past week 2 of the 3 heads in my Duncan coral has been closed. My level are good except for my magnesium and calium they were low my mag was at 1110 current at 1260, my calcium was at 340 now at 360. Nitrate at 20ppm. I had it at the medium level of tank in my biocube 14g and so today I decided place it in the sand bed maybe it's the lighting idk. I have an aiprimehd. Please let me know all the other corals are doing just fine. Thank you


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[fasteddie222]

Mine do that all the time

 

[mpfeiffer1]

Check your salinity as well. They do not like quick changes in Salinity, Temperature, Alk or Calcium. I use Duncans as the "parakeet" of the tank. If they are not happy, there is something off. They usually stay out at night. If they do not show their polyps at night, your chemistry may be off.

 

[trunglippo]

Check your salinity as well. They do not like quick changes in Salinity, Temperature, Alk or Calcium. I use Duncans as the "parakeet" of the tank. If they are not happy, there is something off. They usually stay out at night. If they do not show their polyps at night, your chemistry may be off.

Your reply helps me as well. Thanks