ID Conformations Please?

[Salty Waffles]

Hello, using the hitchhiker guide I believe I have these critters IDed, but I am hoping for some confirmation.

The first two pics are from my 10g frag tank.

In the first pic, I believe the red circled critter is a Convolutriloba flatworm. The green circled critters I believe to be Munnid Isopods.

The second pic, circled in black show what I believe to be Hydroids. Im not sure what that is circled in blue. Aptasia maybe?

The third pic shows what I think is blue Caulerpa, which is in my display and growing from the base rock my Bubble coral is attached to. There is a second colony growing out from under the base of my Spongodes, so a peroxide dose will be tricky. Any removal tips here are welcome. It's my understanding this stuff can be prolific.

 

[Dmorty217]

You are correct on all except the third picture looks like hair algae to me with something else growing on it. Hard to tell from the picture though. Can you take a picture without the blues?

 

[deputydawg88]

Third pic is a type of fern caulerpa, with hair algae growing near it too.

If you physically pull the caulerpa out and maintain your chemistry, that should get rid of it. It's a pretty small amount.

 

[Salty Waffles]

Thanks for the responses.

Yes, the caulepra does indeed have hair algae growing on it. I think I'm about to beat the HA though. It's on the decline.

The two corals with caulepra on their bases have been in the tank two months or so. I saw the blue "strings" protruding from the bases when I brought them home but left them alone and they never grew. The fern like growth didn't start until two weeks ago when I had to tear down my rockwork to get my last few surviving fish out due to a velvet outbreak. I've had a hodgepodge of algae, cyano, and diatoms ever since. I'm under the assumption this is due to a combo of stirring the sand and throwing the nutrient input for a loop.

Thanks again for the input!