Zooanthid White Spots
Printed From: Utah Reefs
Category: Specialized Discussion
Forum Name: SPS
Forum Description: This is the place to ask questions SPS corals.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=8149
Printed Date: December 10 2025 at 2:55pm
Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com
Topic: Zooanthid White Spots
Posted By: Guests
Subject: Zooanthid White Spots
Date Posted: September 13 2005 at 4:11pm
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Any known causes for white powdery-looking dust to form on oral
disks? I've had two medium colonies and one small frag of green
eye variety for about 5mo in a 135gal (setup for 8mo). All have done well until about a month ago when two of the three started showing this white powdery look to their oral disks. Third colony is still unaffected. Is this an indication of too intense lighting? If so, doesn't make sense that they all don't have it. All are subject to same lighting (250w/20K MH). You can see photos of an example of the normal one here: http://www.foreverflying.com/Zoanthids-Green4.JPG ...and the one with the white powdery look here: http://www.foreverflying.com/Zoanthids-Green3.JPG If these are indications of light burn what steps should be taken (if any besides providing less intense lighting). Thanks, |
Replies:
Posted By: Brandon
Date Posted: September 13 2005 at 5:38pm
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Hello, I can't really tell by the pics, but it could just be salt?? When you first started describing it the first thought I had was it was fungus, but from the looks of the pictures, it does look like fungus. Also about the lighting, I beleive that some zoos do awesome under extremely bright lighting in regards to color. Others it seems that they need more actinic lighting to stay colorful? You could try moving them lower? Brandon
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Posted By: dukester48
Date Posted: September 14 2005 at 1:11pm
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Can you wipe the "dust" off?.., they could have just changed color because of your intense lighting..., I had these ugly brown zoos in my tank when I first stated and I gave a couple to centipede and they went from brown to one of the most awsome light blue colored zoos..., they went from my week 36w 50/50 PC's to his 250W MH..., just a thought |
Posted By: Xacttech
Date Posted: September 15 2005 at 8:02pm
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Just a color morph, I have some that look the same as those and did the
same thing also. Nothing to wory about. |
Posted By: Guests
Date Posted: September 17 2005 at 2:45pm
What size tank & lighting conditions do you have for yours that caused the same color morph? � |
Xacttech wrote:Posted By: Xacttech
Date Posted: September 19 2005 at 5:53pm
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90 Gallon 24" Tall w/ Dual 250watt HQI Metal Halides.
They are also next to the glass on the substrate with direct lighting, and lighting reflecting off the front glass/acrylic. Zoas do some crazy things... I have some that I bought completely brown, now they are Pink and blue. |