Emerald crab molt and dinoflagentes issue

[Aidanburkhardt]

Hello I turned the lights on in my tank today and found my emerald crab not moving I wanted to get an opinion on if he is dead or just molted as I am new to the saltwater hobby I have also been dealing with dino throughout my tanks lifecycle which is about 3 months I was wondering if dealing with this dino is normal or if there’s ways I could fix it 

[Clown79]

Are you sure its dino's? Dino's need confirmation under microscope for proper treatment.

 

Looks like diatoms to me.

[Melfy77]

+1 on diatoms. With dinos you'd see bubbles. Also dinos "disappear" at night (in the water column) and are visible again when the light turns on. 

[Melfy77]

And as for the crab...just poke it lol

[j.falk]

2 hours ago, Melfy77 said:

And as for the crab...just poke it lol

That's what I was thinking.  Fish it out with a net and feel it...if it's a molt, it'll be obvious.

[Aidanburkhardt]

On 5/15/2019 at 7:21 AM, Melfy77 said:

+1 on diatoms. With dinos you'd see bubbles. Also dinos "disappear" at night (in the water column) and are visible again when the light turns on. 

It’s hard to see in that specific picture but yes there is bubbles trapped in the substrate 

[Clown79]

43 minutes ago, Aidanburkhardt said:

It’s hard to see in that specific picture but yes there is bubbles trapped in the substrate 

Sometimes the bubbles are just trapped from new sand, it could be cyano.