AEFW, STN, other?

[Dreadnaught]

My tank 245G SPS Dominate DT (+120G S + 150G R) is just under 1 yo, majority of Acro (50+) are about 9 months and doing great. Fully encrusted, most Frag's started 1/2 - 1" and are now 2-3". Parameters are spot-on Alk 9.8, Ca 420, Mg 1450, pH 8.1-8.3. Low Nitrates and Phosphates. Regular water changes.

The only colony I purchased was a 2-3" red dragon. It was good for 4 months with some modest growth never encrusted.... About 8-10 weeks ago... quick death. RTN. I pulled it when it started, dipped it, fragged it.... everything piece died. I chalked it up to RTN.

2 weeks later a nearby 1.5" Etchinata RTN in a couple hours. Never had a chance to Frag. At the same time, I noticed tissue recession on two other nearby Acros. The recession looks oval in shape and looked like bite marks. Immediately thought AEFW and the marks look like every image you find on the subject.

I went into panic mode.... Immediately dosed Flatworm Exit (600G treatment) with a second treatment 2 weeks later. Also started auto dosing Flatworm Stop between the 2 treatments. Still dosing stop daily and getting ready to start Coral Booster.

It's now 4 weeks after the first dose of Exit. Both Acro are alive and growing. The first seems to be healing. The second's recessed tissue is slowly expanding... coral maybe growing faster than the recession though. Pictures below are with a flashlight when the lights were off.

I think I should let the first piece go since its healing. Debating whether or not to cut the second piece out. Should I cut only the area of the sore or the whole thing?

Any other suggestions? I have not seen an AEFW. I dip with Bayer so it's hard to see anything that falls off. Admittedly I was not looking for AEFW.

 

[spspirate]

Maybe AEF, can you get a clear photo? That would help a lot. I would stop dosing the chemicals and try to identify the problem first. A clear photo would be a good start. Have you tried taking a turkey baster and hitting the corals a couple times to see if anything like flat worms fly off? Also I would run a nice dose of activated carbon to pull out the medications you dosed.

 

[Graffiti Spot]

Flatworm exit isn't made for aefw. We need better pictures, the first looks suspicious. Take some with no blue light on. Just whites. Hit the corals with a turkey baster, like stated above, every few days from every angle and you will see a few aefw fly off if you have them. Melafix is a very good dip for aefw and is clear so you can see what's coming off in the dip. It's not harsh on the coral either.