Acropora polyps only coming out at night?

jack.pe · 04/05/2009, 10:48 AM

Hi,

I have a blue Acropora of the brandhing type (not sure if there are others also..), it seems ok but during the day some of the plyps do not come out, all the one round the base and lower parts of branches do but the ones in more direct light and whre the color is at it's most blue only come out after alights out, so basically the tops of all the braches, the last half inch or so only come out during the night, almost as if the light gets irritates them...is this normal?

OwenInAZ · 04/05/2009, 12:58 PM

I have a tri color acro in my tank and it does the same thing. It mostly keeps to itself when lights are on, and the polyps come out at night. It appears to be growing still, so I don't worry about it

ngn8dogg · 04/05/2009, 06:28 PM

I just had a few corals with the same problem. It turned out to be my blenny picking at them.

04/05/2009, 10:48 AM	#1
jack.pe Registered Member Join Date: Apr 2008 Location: London UK Posts: 59	Acropora polyps only coming out at night? Hi, I have a blue Acropora of the brandhing type (not sure if there are others also..), it seems ok but during the day some of the plyps do not come out, all the one round the base and lower parts of branches do but the ones in more direct light and whre the color is at it's most blue only come out after alights out, so basically the tops of all the braches, the last half inch or so only come out during the night, almost as if the light gets irritates them...is this normal? __________________ 24G NanoCube with sump 2 Ocellaris Clowns, Chromis Plating Montipora, Goniopora,Duncan Coral, Zoos and Mushrooms Current Tank Info: Nano Cube 24G

04/05/2009, 12:58 PM	#2
OwenInAZ Registered Member Join Date: Sep 2007 Location: Flagstaff, AZ Posts: 2,409	I have a tri color acro in my tank and it does the same thing. It mostly keeps to itself when lights are on, and the polyps come out at night. It appears to be growing still, so I don't worry about it __________________ Owen Professional Bacteria Geek "Ree... cy... cling?" "One day it's a bowl full of cherries, one night I'm suckin' on lemons and spittin' out the seeds" Current Tank Info: 90 gallon tall reef

04/05/2009, 06:28 PM	#3
ngn8dogg Registered Member Join Date: Oct 2008 Location: San Diego Posts: 507	I just had a few corals with the same problem. It turned out to be my blenny picking at them.