Skin peeling from underside of Acros

[bigbuckdown]

I have noticed in the past month or so that some of my corals start to peel in spots from the under side of acros. it doesnt happen where the the light hits directly on the coral its on the underside. it happens all of a sudden then it slowly starts to heal itself but it leaves the bare skeleton. it has happened on 2 pieces and stopped and now its happening on a purple nana. its scarey because i dont know if it is going to consume the coral or not but so far on the 2 that it has already happened to it stopped but now the nana shows sign of it and it happened alot faster then the other 2. it was fine yesterday and i just looked at it and there are patches only on the underside like 1/2 in long in around 5 different parts of the corals. what can be doing this. i did have flatworms but the other 2 pieces that had the same problem i was able to take out and dip and no worms came off. havent seen any flatworms in 2 months since using flatstop back in april. any help appreciated

 

[bigbuckdown]

i also meant havent seen any worms on this piece in 2 months i have seen more AEFW on other pieces though..

 

[elmafioso52988]

Is it actually peeling? Sounds like rtn to me. Any pics?

 

[bigbuckdown]

no rtn usually happens at the base and works its way up. this happens only on the unerside of corals skin peels off and then just stops. goes away as fast as it appears

 

[karsseboom]

Sounds like Aefw. They usually eat the underside of the coral first.

 

[karsseboom]

If you could post a pic I could tell you for sure.

 

[bigbuckdown]

no i just took it off from where it was encrusted and dipped and not one worm came off after the dip.

 

[bigbuckdown]

pic

pic

here is a picture of the nana in the dipping container. you can see the skeleton showing but its only on the underside. no AEFW came off in the dip.At 3pm it looked fine by 8pm it looked like this. i did a water change yesterday but no other SPS showed any stress afterward.

 

[Moser]

Look for a crab somewhere nearby.
Also, move the coral to a different spot and see if it stops.
No camel shrimps in your reef are there?.

Mo

 

[drw94]

I had the same thing happen to my montipora stellata. For me it was the demise of my tank. I was running zeovit and stopped. Have you done anything to change the biology of the tank. I personally am real careful about keeping corals in my tank that start to lose tissue or for that matter look like they are declining. I always just toss them and hope its issue has not affected any other corals. I know this doesn't help much but I thought my story would help.

 

[bigbuckdown]

no camel shrimps no crabs that i have seen.it has been in that spot for a year now. i had to break it off the encrusting area as it was fully encrusted and i glued it back to the same spot. hopefully if it survives it will encrust that area again

 

[bigbuckdown]

havent really changed anything. im using the same supplements,salt,carbon,phosban,lights i run a cal reactor.it has happened to 2 other corals like i said but they all stopped and are healing

 

[karsseboom]

That really looks like Aefw. Do you know what they look like if they did come off during the dip? They are almost clear and hard to spot.

 

[bigbuckdown]

Yes I know what AEFW look like I fought with them from April till now and ive only seen a few in my system as of late. This didnt have the makings of AEFw no bite marks. It just simply started peeling in the matter of 5 hours and stopped. There has been a drop in AEFW since using flatwormstop but They are not gone. Trust me that was my first thought but it didnt have the same signs so i ruled it out plus the dip confirmed it for me.Don't let my join date fool you I've been in the hobby a long time I dipped for 10 minutes and nothing came off. I looked with a magnifying glass and a flashlight and saw nothing. Just a bunch of mini bristles.