Problem with polyps, Light?
Printed From: Utah Reefs
Category: Help
Forum Name: General Help
Forum Description: The place to ask about pest, problems, hitchhikers, etc.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=86019
Printed Date: December 31 2024 at 10:50pm
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Topic: Problem with polyps, Light?
Posted By: unixnum1
Subject: Problem with polyps, Light?
Date Posted: April 22 2020 at 2:26pm
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Hi, I changed my light filters and I'm now seeing some of the polyps go white and look like they are dying. Does this indicate to much light? Or not enough. Unfortunately I don't have a Pars meter to compare. They have been great since I placed them 3 months ago until I messed with the lights 3 weeks ago. I have lowered the light to see if that helps but I would like other opinions. None of my other coral seemed to care. The circled items are the polyps that are now a grayish white and look closed.  Thanks ------------- 220G with 30G sump, SPS/LPS. RoboTank Controller. ===================================== why am I always the stem? 
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Replies:
Posted By: knowen87
Date Posted: April 22 2020 at 5:13pm
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When you say change the light filter, do you mean the glass under a metal halide bulb?. I have had issues with zoas closing when my magnesium is low and when I had some rusty pump magnets. What are your tank levels and salinity. |
Posted By: unixnum1
Date Posted: April 22 2020 at 6:11pm
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I use DIY LED's and I inserted refraction lens's after the LED's to soften and spread the light more. Salinity=7.2 Temp=75.5 PH=7.7 ORP=348 ALK= 7.0 I know it's a little low. CA= 410 MG=1360 PO4<.025 ------------- 220G with 30G sump, SPS/LPS. RoboTank Controller. ===================================== why am I always the stem?
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Posted By: knowen87
Date Posted: April 22 2020 at 7:57pm
| 7 is a strange number for salinity It should be 1.025 specific gravity or 35ppt. Also how many watts is your whole led light and what percentage of intensity do you keep them at? |
Posted By: knowen87
Date Posted: April 22 2020 at 8:05pm
| Honestly, I would say that it looks to localized for it to be salinity or lights. Most of those zoas look supper happy. If I had to make a guess it would be predation. Do you have any tangs? I have had two hippo tangs that just decided to take out one type of zoa (ofcourse it was always the most expensive ones). My current sailfin hates zoanthid frags. I would watch to see if it gets worse. |
Posted By: unixnum1
Date Posted: April 22 2020 at 10:15pm
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Sorry, typo. Salinity= 1.022 As for the lights, there are a total, across the tank, all 10W LED: Color: #LED's: UV 12, Don't use. Blue, 470nm 18 White, 15K 12 Aqua 12 Deep,Red 3 The schedule is in percentage of maximum: Color 8AM 10AM 12AM 3PM 7PM Night Blue 5 50 90 75 5 2 White 1 40 75 40 1 0 Aqua 0 5 10 5 0 0 Red 0 5 10 5 0 0 Maximum LED wattage=540W I don't use UV, I don't know why I put them in. I only use enough Red/Aqua to bring out color otherwise I get enhanced algae growth As for tang's I have a few but I have never seen them pick on the Zoa's, On fact none of the fish or invert's have touched them that I have seen. Keep the suggestions coming. Thanks! ------------- 220G with 30G sump, SPS/LPS. RoboTank Controller. ===================================== why am I always the stem?
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Posted By: unixnum1
Date Posted: May 01 2020 at 2:54pm
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Update. I moved the zoas to the bottom of the tank partially hidden under a rock shelf. The zoas mostly opened. The ones that looked like they were dying are slowly opening. The zoas under the ledge are not opening as well but I guess I need to give them more light. It's odd that a simple filter would cause such an issue. I was using 80' lenses on the LED's and decided it was to direct. So I put on a cracked ice patterned filter to break up the light so it's softer. That worked as the light looks cleaner. It's amazing that filter could affect the zoas so much. Nothing else was affected. Regards, Kevin ------------- 220G with 30G sump, SPS/LPS. RoboTank Controller. ===================================== why am I always the stem?
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