Is this PMD?

[nmds9]

I acquired this noea clam about a week ago, it was healthy when it first came into the tank, but yesterday I noticed that its mantle had turned like this. I've been checking on him every day for a week and there are no snails or any anemones to sting him.
My water parameters are N 5 P 0 KH8.7 PH8.3. and it's in a position where the T5H0 light mixed with LED is 510 par with 12 hours of light per day.
Should I treat him with RODI water while he is still strong?
Thank you all!

 

[Doctorgori]

good question as that derasa next to it seems happy/extended …I’m guessing the flow is right

 

[nmds9]

good question as that derasa next to it seems happy/extended …I’m guessing the flow is right

Though next to him is a squamosa,I got it from Palau. Does it seem like I should watch it for a few more days, and then I'll put him into RODI water when this part of its mantle shrivels up a bit more

 

[Doctorgori]

Some folks advocate freshwater dip for PMD, I tried recently and it didn’t work for me, so I’d best defer to more knowledgeable clam experts, and there are many here

 

[nmds9]

Some folks advocate freshwater dip for PMD, I tried recently and it didn’t work for me, so I’d best defer to more knowledgeable clam experts, and there are many here

That's what I was thinking, trying to reach out to the experts in this forum. But first I want to make sure it's PMD before I take action. In case the RODI water doesn't work, I'm going to try using dihydroartemisinin, which I've heard protects against many species of protozoa.

 

[minus9]

I would keep an eye on it and see if it progresses. If it gets worse over the next couple days or more, then it may be pmd? Being that your other clams are so close to each other, I would keep an eye on them as well.

 

[Borat]

no, its KPI

 

[nmds9]

I would keep an eye on it and see if it progresses. If it gets worse over the next couple days or more, then it may be pmd? Being that your other clams are so close to each other, I would keep an eye on them as well.

I have another question, I had seen you mention that these photosynthetic organisms that live on the reef their first source of nitrogen is ammonia, so what is the form of phosphorus that they are most likely to take up?

 

[minus9]

I have another question, I had seen you mention that these photosynthetic organisms that live on the reef their first source of nitrogen is ammonia, so what is the form of phosphorus that they are most likely to take up?

There’s research that shows the mantle (outer mantle) can absorb inorganic phosphate directly from water during photosynthesis. Phosphate can also come from particulate food they consume.

 

[Scorpius]

If you see stringy slime coming from that area along with this mantle contraction I would say yes it's PMD. If not, I would hold off on the fw dip and monitor. Sometimes clams are odd and do odd things especially a new arrival.

 

[OrionN]

PMD is only one of the many conditions that cause mantle irritation. Just because your clam has retracted mantle does not mean that it has PMD. The picture is not typical of PMD. PMD retraction curve upward, not downward, less in AM and worse in PM. PMD worsen as the infection spread.
The T. noae picture above has retracted most typical of something irritated or injure it's mantle.

 

[OrionN]

In the two pictures above, the Blue Maxima in the first picture and the blue Crocea in the second picture clearly show the typical retraction of PMD, which is upward curving of the retracted mantle.