Algae eating flatworms?

[rroberts18]

Hi

I believe I have some type of flatworm but I have never seen it on corals. Most often it’s on the glass in areas of what I would call slime algae.

 

[KrisReef]

I never got that lucky with my flatworm infestations.

I have heard that hungry burghia flatworms will be seen on the glass when they can’t find any aiptasia to eat. Yours may be hungry if they aren’t eating algae?

 

[dedragon]

really hard to see them but if they have a red/orange tinge to the they are usually red planaria, and clear usually copepod eating flatworm, but there are a lot of species of flatworms out there so could be anything

 

[dedragon]

I have heard that hungry burghia flatworms will be seen on the glass when they can’t find any aiptasia to eat. Yours may be hungry if they aren’t eating algae?

berghia are actually nudibranchs and not flatworms, if you see them in person they look a lot different

 

[EricR]

Glomming on rather than starting another flatworm help thread -- picture and video below through 1200x (allegedly) digital microscope

Really fast, super tiny (1mm max), brown maybe slightly greenish/yellowish brown flatworms seen on front glass.

Main thing I'm trying to eliminate is possibility that they'd affect zoas,,, short of if enough of them were actually blocking light/photosynthesis (which doesn't seem to be the case as I can't find any actually on zoas)
*flatworms have been in the tank for 1 year with no ill effects so I assume they're fine but recent zoa issues just have me double-checking

Healthy ones are way too fast for me to get decent shots under microscope so I think these are damaged (by me):

*trying to figure out a 1.5 month issue of almost all zoas being closed which I'm pretty sure is just due to the fact that I completely messed up my flow when I switched from 2x smaller HOBs (on each side of the tank) to 1 larger HOB (on side away from zoas)