Greg I had weł over $4500 in colonies ans lost them all to what u had it was like one by one. Receeding some say it was from the intense lighting the same thing happened with my Scollies. It was weird the only thing to go was the scans all SPS were great other then the acans. They talk about acans having in contacta disease from them touching each other.

I have the same thing happening with my euphyllia. One head takes about a week to fall off and then just when you think no more are going to die, another head falls off. Maybe on the same one maybe on a different one. It is just slowly working its way around my tank. Lost over 50 heads so far.

I've had this happen a time or two with acans. mostly colony's on rock. Cutting off the dead parts I've found the rock to have very foul smelling black holes, and in some cases a very small bright red worm. The worm isn't any thicker than a piece of string and maybe an nice long. If I notice an acan even looking slightly off now I give it a soak with a tiny bit of hydrogen peroxide. It seems to perk them right up.

Funny you ask. I just found one of my most fave acans in the clutches of the black longspined urchin, with the Ecotech coral glue busted loose
Could just be a coincedence, but now I'm wondering ...
I didn't find anything on the web about urchins eating acans :noidea:
Yesterday, this particular colony was fine, now it's missing more heads
The rest of the receding acans are unchanged

Mike, I've cut my lighting way back, so I'm hoping to see a difference

Shelley, I read about someone losing acans and finding a kind of bristleworm in the skeleton. Kinda like being eaten from the inside out maybe ...

Seriak, it seems that none of us can keep all the kinds of corals we want to. Some of us lose 'this one', and some 'another'
I'm just happy to not have lost most of ours :wink:

I just pulled out the acan that is currently suffering the most as I found it in the clutches of the urchin last night and was preparing to re-glue it

I decided to remove all the old glue first and wouldn't you know it, there are worms inside the underside of the skeleton :surprise::surprise:
It's currently in a dip and I'll post pics once I'm done

Hopefully this is the cause and the recession will end

There were 3 worms in the skeleton. Looks like fireworms maybe ?
This is the largest of them - about 1/2" long

http://i749.photobucket.com/albums/x...ps09b11166.jpg

wow I better make sure I dip everything before I put it into my tank now, Scary after seeing what happened and what pest may tag along.

The worms I've found before are red and more thread like.. No bristles. They live in tiny holes burrowed into the skeleton. Soak in water with a bit of Hydrogen peroxide seems to get em out!

Good tip :smile:
I used Revive and they came out a'running right away :twised:

I've decided to keep feeding my SPS and let the Acan chips fall as they may :lol:
Too bad 'cause they were nice critters

The SPS are bouncing back nicely