Only the perimeter still retains some color. The core of this coral is severely affected. The problem I've discovered is you simply can not see them on the coral itself in your tank. On the base of the coral, I found these eggs maturing.įor a sense of scale, a penny was placed in the frame. The tiny ones are circled to help you realize how small they can get. I conducted the test as outlined above, and this is what I discovered. These are truly invisible.Īnd what it looked like when I decided action was necessary. These are not like Red Planaria, nor like the mollusk-eating kind that we come across from time to time. AEFW only affect Acropora sp., not any other kind of coral. Their latin name is Amakusaplana acroporae. If you see flat oval disks coming out of the coral, it is most likely infested with Acropora-eating flatworms (AEFW for short). Next, use a turkey baster to blast the coral with a few jets of water, and see what blows off or out of the coral. Add a few drops of Lugol's Solution, stir and wait about a minute. Looking online for help, I found a simple test: Take the coral, place it in a white bowl and fill it up with water from your reef. It was polyped out, and seemed to grow at the regular pace. Staring at the coral, nothing looked wrong with it other than it being faded. Later, I discovered my favorite SPS coral was fading fast, the color literally leaving the coral more and more daily. I wasn't too concerned, and thought it wasn't a big deal. "Uh-oh, I think I might have AEFW." I saw this statement several years ago.
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