AEFW and Acropora Bugs in my tank?

Nico_I99

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Hello,
I'm (once again) struggling with poor PE and some tissue loss on my Acropora.

First of all my tank parameters and my setup:

430L Tank Volume

Very recent ICP:

KH, CA and Po4 are fairly stable and I measure about the same as the ICP does.
What I'm dosing:

5 drops of Fauna Marin MinS,
3ml of Fauna Marin Amin

Fauna Marin balling light:
220ml KH,
30ml Ca,
10ml

Temp:
25°C

Light:
ATI Hybrid with 2x Blue Plus and 2x Coral Plus. The T5 is running at 100%, the LED clusters at 75%. Light is on for 10h30, with the last 2 hours being my blue light phase. The Acropora are sitting at ~350 PAR.

Skimmer:
Bubble Magus Curve A8

Flow:
2x Tunze 6095,
1x Jebao MLW 30

Fish List:
1x Siganus vulpinus,
1x Centropyge bispinosa,
1x Salarias fasciatus,
1x Pseudocheilinus hexataenia,
2x Pterapogon kauderni,
5x chromis viridis

I'm also running Carbon and UVC 24/7


So, it all started quite a few months back where one of my Acropora started to lighten up and the PE got worse and worse. It is still growing but not as fast though. Here are some pictures of that happening and a video of some kind of critter moving around on the Acropora at night (don't mind the tissue loss around the basal disc, that happend because I misplaced a pocillopora):
PXL_20230721_111804472.MP.jpg PXL_20240219_174012664.jpg PXL_20240219_174024971.jpg


Here are some Pictures (how it currently looks and how it did look a week or so ago) and a Video of a Millepora frag during nighttime to highlight the spots I've seen on it:

PXL_20240104_150225984.jpg PXL_20240219_173730760.jpg



And here are two pictures of one of the Flatworms(perhaps AEFW) I've found on the Coral (or the plug, who knows) in my dip after dipping the Frag. They also linger around on the Rockwork and the Glass, I can't see a lot of them though:
PXL_20240219_152419542.jpg PXL_20231019_183946819.jpg


Not all Acropora seem to be doing bad though, here are some more Pictures:
PXL_20240219_173809178.MP.jpg PXL_20240219_173822645.jpg PXL_20240219_173835617.jpg PXL_20240219_174302294.jpg PXL_20240219_174203823.jpg PXL_20240219_174148526.jpg PXL_20240219_174132223.jpg

And a full tank shot (yup, looks messy - fighting with Derbesia sp.):
PXL_20240219_173922514.jpg

What I'm currently doing is dipping the Acropora i can actually grab out of the tank every 14 days and use a turkey baster on the ones i can't take out easily. I've never actually blew flatworms directly out of the coral as far as i can tell but i usually get a few off of the rockwork. I've also never seen any egg clusters, neither on the rockwork nor on the coral themselves.

So, could anyone with more experience than me help me out with my current issue? Does this look like AEFW and/or Bugs to you guys? I'd greatly appreciate any advice given. I'm starting to worry about my Acros :(

If I'm missing any kind of information let me know, I'll provide whatever necessary!


Kind regards and thanks in advance,
Nico
 

ISpeakForTheSeas

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