Larger zoas closed up??

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xxkenny90xx

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Dec 3, 2012
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So here's the deal, I have around 20 different types of zoas and palys in my 90 gallon tank along with a few other softies, and some sps and lps and about two weeks ago 3 different types of zoas closed up and started to shrink. The weird thing is that all of my "normal" sized (maybe 1/8" to 3/16") zoas are doing great, these are ALL of my larger (maybe 5/16") zoas that are having trouble. They don't seem to be getting any worse, but I'm just not sure what's going on. Are the zoas that grow large of a different species with different requirements?? One of the colonies is in the top middle, one is in the middle, and one is bottom right in my tank (so all different areas of the tank). I did check my parameters two weeks ago and everything was great. I can check again tomorrow and post them if necessary. I am due for a biweekly water change this weekend. I have made some major changes to my tank in these two weeks (added 20lbs lr, added lta nem, switched to LEDs) but didn't change anything prior to them closing. Thanks
 

xxkenny90xx

Well-known member
Joined
Dec 3, 2012
Messages
229
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Tacoma
I have considered pests but haven't noticed anything. Its just weird to me that all 3 groups closed up at the same time. Closing up to reproduce? Interesting, I haven't seen/heard of that before, time to do some research. Thanks
 

xxkenny90xx

Well-known member
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I agree but these closed before I made the switch. On a side note I did lower my whites to 30% and blues to 20% (Thanks for that advice mfinn)
 

kpiotrowski

Kevin
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Jun 14, 2011
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Buckley,wa
Never heard that one.
I would be very interested to read/look at where you got this info. :)
had green paly's closing. freind told me so. then noticed much more in next few weeks. I stated its not my area of expertise! just what I experienced. plus this behaviour it witnessed in many lifeforms....I didn't think is was that far of a stretch when it was told to me, and still don't.
 

mfinn

Surgeonfish
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May 31, 2004
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Olympia, WA
had green paly's closing. freind told me so. then noticed much more in next few weeks. I stated its not my area of expertise! just what I experienced. plus this behaviour it witnessed in many lifeforms....I didn't think is was that far of a stretch when it was told to me, and still don't.

I'm not doubting you or trying to challenge you, I was just wondering, because I haven't of that.

Most or all zoanthids and palys close up at night and I suppose at that point you notice the new little buds popping up beside the adults.

But I haven't heard that they close up during the day to reproduce.
IMO, when they close up during the day, it's because of something bothering/touching them and that is their protection response.
 

kpiotrowski

Kevin
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Jun 14, 2011
Messages
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Location
Buckley,wa
Mine were closed and half closed for a few days. about 15-20 of them. I wasn't really monitoring them too close. Then it seems a short while later like a few weeks or a month the rock was covered with about double in variious sizes. only having one opinion at the time and seeing the end result, I took it as true. you just never know! I mean my elgance closed before spliting...nems do it.....what do I know lol.

maybee they were irritated by something else and reproducing was a result of that stress???
 

mfinn

Surgeonfish
Joined
May 31, 2004
Messages
6,899
Location
Olympia, WA
Mine were closed and half closed for a few days. about 15-20 of them. I wasn't really monitoring them too close. Then it seems a short while later like a few weeks or a month the rock was covered with about double in variious sizes. only having one opinion at the time and seeing the end result, I took it as true. you just never know! I mean my elgance closed before spliting...nems do it.....what do I know lol.

maybee they were irritated by something else and reproducing was a result of that stress???
You could be right.
Observation is one of the best learning tools we have.
 
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