Neon Green Tree

I have a Neon Green Tree coral that has been in the tank for about 5 months now. It has always done great, however, the past 2 days it is not fully extending. At night it shrinks to the size of a baseball but when the lights come on it usually extends about 9 inches high and about 5 inches around. It is now about half that size and the polyps are not extending...Any ideas?

Water parameters
ph 8.4
SG 1.025
Temp 79
Ca 475
Alk 10.4
Ammonia 0
Nitrites 0
Nitrates about 10 ppm

All of the other corals look great...

 

hmmmm has anything hit it lately? anything nipping at it?

 

I have been thinking along those lines as well. At first I thought a snail might have brushed up against it. This always causes corals to close right up but after the second day I kinda ruled that out. I know my Toadstool went through a period of three weeks when it stayed completely closed and when it did open it was more healthy looking then before it closed. Since this is a leather I am wondering if this might be the same thing...

 

Most likey, yes (it's called "sloughing" by the way)

 

Thanks, Amcarrig...I couldn't think of the official name, LOL....You are always on the ball....8)

 

This is an interesting discussion. thank you for sharing ;D

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Good Info Thank you....
Danny

 

How old are your bulbs? Luna