What is this ? And is it Good or Bad ?

[Anthygod]

Hello
I have these little things all over my glass…
Could someone please let me know of they are Good or Bad and what exactly it is ?
Thank you very much

 

[blaxsun]

Flatworms. You probably don't want 'em.

 

[Mikedawg]

flatworms; some are okay, others you'll want to get rid of. I can't identify the particular species and hope someone else can.

 

[Anthygod]

Flatworms. You probably don't want 'em.

Ok , is there a way i can Identify if they are Bad Ones? Thank you very much

 

[blaxsun]

Ok , is there a way i can Identify if they are Bad Ones? Thank you very much

If they start eating your corals, then they're bad.

 

[Mikedawg]

I would start by finding pics of flatworms on net for comparison purposes, and hopefully you'll also find references to a few articles. And, of course, watch them to see if they cause any damage in your tank.

They resemble some I have in my refugium and I believe mine are harmless, but you may not want to take a chance. Anyway, may want to syphon out/net as many as you can. Some species seem to come and go.

 

[EricR]

I don't think anyone ever wants flatworms but some are less problematic than others.

For your specific case, maybe post what kind of corals you're keeping to see if experts have thoughts on whether or not they may be a problem for your corals.

 

[vetteguy53081]

Ghost/acoel flatworms. Theyre not an issue opposed to red planaria however in numbers, they can smother and block the light coral need for production of zooxanthellae which is their building blocks.
Easiest Removal is siphoning with a 3/8" tubing and discard. If in Heavy number, utilize a wrasse that will eat them such as :
Yellow coris
6 line
lunare
Melanurus

OR
Springieri damsel

 

[Mikedawg]

Ghost/acoel flatworms. Theyre not an issue opposed to red planaria however in numbers, they can smother and block the light coral need for production of zooxanthellae which is their building blocks.
Easiest Removal is siphoning with a 3/8" tubing and discard. If in Heavy number, utilize a wrasse that will eat them such as :
Yellow coris
6 line
lunare
Melanurus

OR
Springieri damsel

+1; after studying pics sure look like ghost flatworms. If you search Reef2Reef you'll find mixed results for various chemical compounds used to kill them.

 

[vetteguy53081]

+1; after studying pics sure look like ghost flatworms. If you search Reef2Reef you'll find mixed results for various chemical compounds used to kill them.

Chemicals are a Last resort
With flatworm stop you have to siphon the dead ones daily as they can release toxins

 

[Anthygod]

I would start by finding pics of flatworms on net for comparison purposes, and hopefully you'll also find references to a few articles. And, of course, watch them to see if they cause any damage in your tank.

They resemble some I have in my refugium and I believe mine are harmless, but you may not want to take a chance. Anyway, may want to syphon out/net as many as you can. Some species seem to come and go.

Thank you very much !!

 

[Anthygod]

I don't think anyone ever wants flatworms but some are less problematic than others.

For your specific case, maybe post what kind of corals you're keeping to see if experts have thoughts on whether or not they may be a problem for your corals.

Thank you for your reply. I only have soft and LPS corals- like euphyllia acans mushrooms zoas

 

[PeterEde]

Flat worms are bad hmmm kay

 

[Anthygod]

Ghost/acoel flatworms. Theyre not an issue opposed to red planaria however in numbers, they can smother and block the light coral need for production of zooxanthellae which is their building blocks.
Easiest Removal is siphoning with a 3/8" tubing and discard. If in Heavy number, utilize a wrasse that will eat them such as :
Yellow coris
6 line
lunare
Melanurus

OR
Springieri damsel

Ghost/acoel flatworms. Theyre not an issue opposed to red planaria however in numbers, they can smother and block the light coral need for production of zooxanthellae which is their building blocks.
Easiest Removal is siphoning with a 3/8" tubing and discard. If in Heavy number, utilize a wrasse that will eat them such as :
Yellow coris
6 line
lunare
Melanurus

OR
Springieri damsel

Thank you very much ! Very Helpful !

 

[blaxsun]

+1 sixline wrasse.