Giant bite marks under acropora?

Miami Reef

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edit. I think I figured it out.
 
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Oh boy….had me worried.
This is what it looks like.

IMG_0079.jpeg



I think I might know what’s causing this.
 
What's your theory?
I’ll let you know in a few weeks, if I’m correct. It’s the only change I’m going to make. I have other acros and clams that’s been struggling, and I think I might know why, but I won’t say publicly because I’ll feel foolish if I’m wrong.
 
I’ll let you know in a few weeks, if I’m correct. It’s the only change I’m going to make. I have other acros and clams that’s been struggling, and I think I might know why, but I won’t say publicly because I’ll feel foolish if I’m wrong.
Ehhh...we're all fools in this hobby sometimes..lol.
 
Usually it’s one of four….nutrients, chemistry, light, or swing. Sometimes a combination.
 
Update!!

I made several changes, and I got the problem fixed.


Before:
IMG_0579.jpeg



After:
IMG_0576.jpeg



I took a long and hard look at any potential causes and solved them. I don’t know exactly what the cause was, but we’re good now!
 
I tried typing it out, but it was getting really long and complicated to explain. It was a very involved process of narrowing potential issues and then adding things back.

I did an ICP test, killed potential predators, stopped potential chemical dosing culprits, and did a large water change. I then adding things back when I believed I found the culprit.

I think I might have 4-5 potential causes that I permanently ruled out. It was all about ruling things out and then adding other things back.

Here’s one example, I initially thought my elevated alkalinity was the culprit. I lowered it during the diagnostic process. Now it’s back up to where I want it and the corals are fine. Thus, the alkalinity wasn’t the issue.

Here’s another example: I thought maybe my trace elements were toxically elevated, so I stopped dosing trace elements for a week prior to sending the ICP. The result showed very low trace elements, so I ruled that out.


That’s the kind of process I do. It’s meticulous and methodical.
 

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