Could anyone ID this nuisance algae?

[djryan2000]

I have a strange new nuisance algae growing in my tank. It’s really stringy but doesn’t seem to be GHA or bryopsis and even grows on top of both.
Here are some pics;

current nutrients
PO4 - 0.13 ppm (Hannah ULR)
Nitrates - 2ppm (Salifert)

I’m unsure if the low nitrates are from the algae soaking it up or the fact I’ve been dosing nopox for about 2 weeks, I started with 4mL daily and have upped to 7 upon seeing all the nuisance algae.

 

[ZoixDark]

Spirulina maybe?

 

[JGT]

I have a strange new nuisance algae growing in my tank. It’s really stringy but doesn’t seem to be GHA or bryopsis and even grows on top of both.
Here are some pics;

current nutrients
PO4 - 0.13 ppm (Hannah ULR)
Nitrates - 2ppm (Salifert)

I’m unsure if the low nitrates are from the algae soaking it up or the fact I’ve been dosing nopox for about 2 weeks, I started with 4mL daily and have upped to 7 upon seeing all the nuisance algae.

Green hair algae.
Manually remove/siphon out, check NO3 and PO4 are in range, lessen feeding, shorten light intervals, add CUC if you don’t have and a tang or 2 depending on tank size and lawnmower blenny. Be patient. Will take time to eradicate.

 

[djryan2000]

Green hair algae.
Manually remove/siphon out, check NO3 and PO4 are in range, lessen feeding, shorten light intervals, add CUC if you don’t have and a tang or 2 depending on tank size and lawnmower blenny. Be patient. Will take time to eradicate.

I’ve had a share of of GHA, and the picture of the sand is definitely GHA, however I don’t think it’s GHA on the rock with euphyllia. Its hard to pull out like bryopsis, and is stringy like Dino. CUC (~a mix of ~45 snails and hermits of varying species) won’t touch it.

edit: another detail that may be hard to tell from the photo is that the strings overlap in every direction like a web. I’ve never seen anything like it.