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Are my zoas damaged from too much light or is it due to disease/pests?


ReefJunkee

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Something is wrong with my zoas and I can’t figure it out. I purchased 6 different zoas a few weeks ago and made the mistake of not dipping them. I don’t see any bugs on them (except for large amphipods on them at night), but they just don’t look healthy. They are losing their colors and a few heads within the colony would get damage like in the photos. Please note that only my newly purchased zoas are affected and my sps are doing great.

 

I know there many possibilities, but I would like to eliminate this as a cause. Can anyone tell me from the following photos if my zoas are burned from too much light or if they have disease/pests? What are the usual symptoms when zoas are burned from too much light? Do they just bleach or what?

 

They were recently purchased from another local reefer. His tank is the jbj nano cube 28 quad (105watt pc). My tank is the jbj nano cube 28 hqi (150mh + 36w actinic = 186watt). Originally, the zoas were placed mid level when they were in his tank. I placed them on the bottom of my tank and I run my mh for 10 hours and my actinic for 12 hours. They looked great during the first 5 days before these symptoms occurred.

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burtbollinger

IME it could be just the nature of the beast when dealing with zoas....i sometimes have colonies flucuate without rhyme or reason.

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Ya, certain zoas and palys just melt in different tanks. I had a whole bunch of magician's palys melt within days of putting them in my tank. Made me sad.

Test your alkalinity to be sure it's at a decent level just to be sure.

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good choice on putting them on the bottom. they will def need time to adjust to your stronger par. i had a few zoas do that when i first got them and i dipped them in lugols. so i dont think a dip would help much. i would most likely say its from your light being considerable stronger. maybe try some shade or cut back your light cycle some. they zoas look great tho and i would not stress too much unless it starts spreading. does not look like any harmful algeas in your pics either. i think they are just adjusting to the light. as long as all your params are in check.

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Some of my paly's looked like that after they got stung. Some of the skirt tentacles shriveled like that but recovered quickly.

 

Check for nearby sweeper tentacles from another coral.

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good choice on putting them on the bottom. they will def need time to adjust to your stronger par.

 

 

+1

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  • 3 years later...
squillaempusa

Something is wrong with my zoas and I can’t figure it out. I purchased 6 different zoas a few weeks ago and made the mistake of not dipping them. I don’t see any bugs on them (except for large amphipods on them at night), but they just don’t look healthy. They are losing their colors and a few heads within the colony would get damage like in the photos. Please note that only my newly purchased zoas are affected and my sps are doing great.

 

I know there many possibilities, but I would like to eliminate this as a cause. Can anyone tell me from the following photos if my zoas are burned from too much light or if they have disease/pests? What are the usual symptoms when zoas are burned from too much light? Do they just bleach or what?

 

They were recently purchased from another local reefer. His tank is the jbj nano cube 28 quad (105watt pc). My tank is the jbj nano cube 28 hqi (150mh + 36w actinic = 186watt). Originally, the zoas were placed mid level when they were in his tank. I placed them on the bottom of my tank and I run my mh for 10 hours and my actinic for 12 hours. They looked great during the first 5 days before these symptoms occurred.

what ever happened to them? i have the same ones i think, "The Devil's Armor" that were doing the same thing, and are now closed and won't open.

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It might be the amphipods. My wife has had issues with them destroying her colonies. She took them off the rocks, put them all on a rack and they're all thriving again.

 

As an experiment, she put a colony back down on the rock and it was devoured within a week. The large amphipods would swarm it on lights out.

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